Batch 1: dashboard, maps, segments rewrite, health, sync UX

Fixes:
- Dashboard: featured most-recent activity card with map + stats
- Maps default to Street; preferCanvas + larger tile buffer for smoother pan/zoom
- Running cadence as colour-banded dots + 165 spm guide line
- Routes: inline row expansion, rename (PATCH /routes/{id}), podium + deltas, tiled map
- Records: remove reversed pace Y-axis
- Profile: remove resting HR; add goal weight
- Health: snapshot weight carry-forward; VO2 trend axis 30-70;
  weight goal line + kg/st-lb toggle + axis max; sleep 8h/avg lines
- Garmin sync progress moved to global store with persistent floating bar

Features:
- Speed-coloured activity route (default) with Speed/Solid toggle
- GPS-geometry segments: draw on map, match across all activities,
  1st/2nd/3rd leaderboard + podium badges (replaces old distance segments)
- Lap bests: best time per lap across a route + delta column
- Body Battery: highlight activity time windows

Schema: users.goal_weight_kg ALTER; new segments/segment_efforts tables.
Removes RouteSegment, the Segments page, and segment-bests endpoints.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/app/api/activities.py

@@ -195,6 +195,37 @@ async def get_laps(
     return result.scalars().all()
 
 
+@router.get("/{activity_id}/lap-bests")
+async def get_lap_bests(
+    activity_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    """Best (fastest) time per lap number across all activities on the same route."""
+    act = (await db.execute(
+        select(Activity).where(
+            Activity.id == activity_id,
+            Activity.user_id == current_user.id,
+        )
+    )).scalar_one_or_none()
+    if not act:
+        raise HTTPException(status_code=404, detail="Activity not found")
+    if not act.named_route_id:
+        return {}
+
+    rows = (await db.execute(
+        select(ActivityLap.lap_number, func.min(ActivityLap.duration_s))
+        .join(Activity, Activity.id == ActivityLap.activity_id)
+        .where(
+            Activity.named_route_id == act.named_route_id,
+            Activity.user_id == current_user.id,
+            ActivityLap.duration_s.isnot(None),
+        )
+        .group_by(ActivityLap.lap_number)
+    )).all()
+    return {str(lap_number): best for lap_number, best in rows}
+
+
 @router.patch("/{activity_id}/name")
 async def rename_activity(
     activity_id: int,

backend/app/api/profile.py

@@ -20,6 +20,7 @@ class ProfileUpdate(BaseModel):
     birth_year: Optional[int] = None
     height_cm: Optional[float] = None
     biological_sex: Optional[str] = None
+    goal_weight_kg: Optional[float] = None
 
 
 class ProfileOut(BaseModel):
@@ -31,6 +32,7 @@ class ProfileOut(BaseModel):
     birth_year: Optional[int]
     height_cm: Optional[float]
     biological_sex: Optional[str]
+    goal_weight_kg: Optional[float]
     estimated_max_hr: Optional[int]
     is_admin: bool
 
@@ -78,6 +80,10 @@ async def update_profile(
         if body.biological_sex not in ('male', 'female', ''):
             raise HTTPException(400, "biological_sex must be 'male' or 'female'")
         current_user.biological_sex = body.biological_sex or None
+    if body.goal_weight_kg is not None:
+        if body.goal_weight_kg and not (20 <= body.goal_weight_kg <= 500):
+            raise HTTPException(400, "Goal weight must be 20–500 kg")
+        current_user.goal_weight_kg = body.goal_weight_kg or None
 
     await db.commit()
     await db.refresh(current_user)

backend/app/api/records.py

@@ -7,7 +7,7 @@ from datetime import datetime
 
 from app.core.database import get_db
 from app.core.security import get_current_user
-from app.models.user import User, PersonalRecord, NamedRoute, RouteSegment, HealthMetric, Activity
+from app.models.user import User, PersonalRecord, NamedRoute, HealthMetric, Activity
 
 router = APIRouter()
 

backend/app/api/routes.py

@@ -7,18 +7,11 @@ from datetime import datetime, timedelta, timezone
 
 from app.core.database import get_db
 from app.core.security import get_current_user
-from app.models.user import User, NamedRoute, RouteSegment, Activity
+from app.models.user import User, NamedRoute, Activity
 
 router = APIRouter()
 
 
-class SegmentCreate(BaseModel):
-    name: str
-    start_distance_m: float
-    end_distance_m: float
-    description: Optional[str] = None
-
-
 class RouteCreate(BaseModel):
     name: str
     description: Optional[str] = None
@@ -26,6 +19,11 @@ class RouteCreate(BaseModel):
     activity_id: int
 
 
+class RouteUpdate(BaseModel):
+    name: Optional[str] = None
+    sport_type: Optional[str] = None
+
+
 class RouteOut(BaseModel):
     id: int
     name: str
@@ -42,32 +40,6 @@ class RouteOut(BaseModel):
         from_attributes = True
 
 
-class SegmentOut(BaseModel):
-    id: int
-    name: str
-    start_distance_m: float
-    end_distance_m: float
-    description: Optional[str]
-    auto_generated: Optional[bool] = False
-    auto_generated_type: Optional[str] = None
-
-    class Config:
-        from_attributes = True
-
-
-class AutoGenerateRequest(BaseModel):
-    type: str  # "1km" | "turns" | "hills"
-    gradient_pct: float = 5.0
-    turn_angle_deg: float = 45.0
-
-
-class SegmentTimeEntry(BaseModel):
-    activity_id: int
-    date: datetime
-    name: str
-    duration_s: float
-
-
 @router.get("/", response_model=List[RouteOut])
 async def list_routes(
     db: AsyncSession = Depends(get_db),
@@ -179,6 +151,31 @@ async def get_route(
     return route
 
 
+@router.patch("/{route_id}", response_model=RouteOut)
+async def update_route(
+    route_id: int,
+    body: RouteUpdate,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    result = await db.execute(
+        select(NamedRoute).where(
+            NamedRoute.id == route_id,
+            NamedRoute.user_id == current_user.id,
+        )
+    )
+    route = result.scalar_one_or_none()
+    if not route:
+        raise HTTPException(status_code=404, detail="Route not found")
+    if body.name is not None and body.name.strip():
+        route.name = body.name.strip()
+    if body.sport_type is not None:
+        route.sport_type = body.sport_type
+    await db.commit()
+    await db.refresh(route)
+    return route
+
+
 @router.get("/{route_id}/activities")
 async def route_activities(
     route_id: int,
@@ -281,292 +278,3 @@ async def assign_activity_to_route(
     activity.named_route_id = route_id
     await db.commit()
     return {"status": "ok"}
-
-
-async def _get_owned_route(route_id: int, user_id: int, db: AsyncSession) -> NamedRoute:
-    result = await db.execute(
-        select(NamedRoute).where(NamedRoute.id == route_id, NamedRoute.user_id == user_id)
-    )
-    route = result.scalar_one_or_none()
-    if not route:
-        raise HTTPException(status_code=404, detail="Route not found")
-    return route
-
-
-@router.get("/{route_id}/segments", response_model=List[SegmentOut])
-async def list_segments(
-    route_id: int,
-    db: AsyncSession = Depends(get_db),
-    current_user: User = Depends(get_current_user),
-):
-    await _get_owned_route(route_id, current_user.id, db)
-    result = await db.execute(
-        select(RouteSegment)
-        .where(RouteSegment.route_id == route_id)
-        .order_by(RouteSegment.start_distance_m)
-    )
-    return result.scalars().all()
-
-
-@router.post("/{route_id}/segments", response_model=SegmentOut)
-async def create_segment(
-    route_id: int,
-    body: SegmentCreate,
-    db: AsyncSession = Depends(get_db),
-    current_user: User = Depends(get_current_user),
-):
-    await _get_owned_route(route_id, current_user.id, db)
-    segment = RouteSegment(
-        route_id=route_id,
-        name=body.name,
-        start_distance_m=body.start_distance_m,
-        end_distance_m=body.end_distance_m,
-        description=body.description,
-        auto_generated=False,
-    )
-    db.add(segment)
-    await db.commit()
-    await db.refresh(segment)
-    return segment
-
-
-@router.delete("/{route_id}/segments/{segment_id}", status_code=204)
-async def delete_segment(
-    route_id: int,
-    segment_id: int,
-    db: AsyncSession = Depends(get_db),
-    current_user: User = Depends(get_current_user),
-):
-    await _get_owned_route(route_id, current_user.id, db)
-    result = await db.execute(
-        select(RouteSegment).where(
-            RouteSegment.id == segment_id, RouteSegment.route_id == route_id
-        )
-    )
-    seg = result.scalar_one_or_none()
-    if not seg:
-        raise HTTPException(status_code=404, detail="Segment not found")
-    await db.delete(seg)
-    await db.commit()
-
-
-@router.post("/{route_id}/segments/auto", response_model=List[SegmentOut])
-async def auto_generate_segments(
-    route_id: int,
-    body: AutoGenerateRequest,
-    db: AsyncSession = Depends(get_db),
-    current_user: User = Depends(get_current_user),
-):
-    """Auto-generate segments: 1km splits, turns, or hills."""
-    from app.services.route_matcher import (
-        generate_1km_segments, generate_turn_segments, generate_hill_segments,
-    )
-    from sqlalchemy import delete as sql_delete
-
-    route = await _get_owned_route(route_id, current_user.id, db)
-
-    if body.type not in ("1km", "turns", "hills"):
-        raise HTTPException(status_code=400, detail="type must be '1km', 'turns', or 'hills'")
-
-    # Clear only auto-generated segments of the same type so other auto types are preserved
-    await db.execute(
-        sql_delete(RouteSegment).where(
-            RouteSegment.route_id == route_id,
-            RouteSegment.auto_generated == True,
-            RouteSegment.auto_generated_type == body.type,
-        )
-    )
-
-    raw_segments: list[tuple[str, float, float]] = []
-
-    if body.type == "1km":
-        if not route.distance_m:
-            raise HTTPException(status_code=400, detail="Route has no distance recorded")
-        raw_segments = generate_1km_segments(route.reference_polyline or "", route.distance_m)
-
-    elif body.type == "turns":
-        if not route.reference_polyline:
-            raise HTTPException(status_code=400, detail="Route has no polyline")
-        raw_segments = generate_turn_segments(route.reference_polyline, body.turn_angle_deg)
-
-    elif body.type == "hills":
-        if not route.reference_polyline:
-            raise HTTPException(status_code=400, detail="Route has no polyline")
-        # Find most recent matched activity for elevation data
-        act_result = await db.execute(
-            select(Activity)
-            .where(Activity.named_route_id == route_id, Activity.user_id == current_user.id)
-            .order_by(desc(Activity.start_time))
-            .limit(1)
-        )
-        act = act_result.scalar_one_or_none()
-        if not act:
-            raise HTTPException(status_code=400, detail="No matched activities found for elevation data")
-        from app.models.user import ActivityDataPoint
-        dp_result = await db.execute(
-            select(ActivityDataPoint)
-            .where(ActivityDataPoint.activity_id == act.id)
-            .order_by(ActivityDataPoint.timestamp)
-        )
-        dps = dp_result.scalars().all()
-        dp_list = [{"distance_m": p.distance_m, "altitude_m": p.altitude_m} for p in dps]
-        raw_segments = generate_hill_segments(dp_list, body.gradient_pct)
-
-    new_segments = []
-    for name, start_m, end_m in raw_segments:
-        seg = RouteSegment(
-            route_id=route_id,
-            name=name,
-            start_distance_m=start_m,
-            end_distance_m=end_m,
-            auto_generated=True,
-            auto_generated_type=body.type,
-        )
-        db.add(seg)
-        new_segments.append(seg)
-
-    await db.commit()
-    for seg in new_segments:
-        await db.refresh(seg)
-    return new_segments
-
-
-class SegmentBestOut(BaseModel):
-    segment_id: int
-    name: str
-    start_distance_m: float
-    end_distance_m: float
-    auto_generated: bool
-    best_s: Optional[float]
-    best_activity_id: Optional[int]
-    count: int
-
-
-@router.get("/{route_id}/segment-bests", response_model=List[SegmentBestOut])
-async def get_segment_bests(
-    route_id: int,
-    db: AsyncSession = Depends(get_db),
-    current_user: User = Depends(get_current_user),
-):
-    """Return best time per segment across all matched activities for a route."""
-    from app.services.route_matcher import find_segment_times
-    from app.models.user import ActivityDataPoint
-    from collections import defaultdict
-
-    await _get_owned_route(route_id, current_user.id, db)
-
-    segs_result = await db.execute(
-        select(RouteSegment)
-        .where(RouteSegment.route_id == route_id)
-        .order_by(RouteSegment.start_distance_m)
-    )
-    segments = segs_result.scalars().all()
-    if not segments:
-        return []
-
-    acts_result = await db.execute(
-        select(Activity)
-        .where(Activity.named_route_id == route_id, Activity.user_id == current_user.id)
-        .order_by(desc(Activity.start_time))
-        .limit(20)
-    )
-    activities = acts_result.scalars().all()
-    if not activities:
-        return [
-            SegmentBestOut(
-                segment_id=s.id, name=s.name,
-                start_distance_m=s.start_distance_m, end_distance_m=s.end_distance_m,
-                auto_generated=bool(s.auto_generated), best_s=None, best_activity_id=None, count=0,
-            )
-            for s in segments
-        ]
-
-    act_ids = [a.id for a in activities]
-
-    dp_result = await db.execute(
-        select(ActivityDataPoint)
-        .where(ActivityDataPoint.activity_id.in_(act_ids))
-        .order_by(ActivityDataPoint.activity_id, ActivityDataPoint.timestamp)
-    )
-    all_dps = dp_result.scalars().all()
-
-    # Group data points by activity_id
-    dp_by_act = defaultdict(list)
-    for dp in all_dps:
-        if dp.distance_m is not None:
-            dp_by_act[dp.activity_id].append({"distance_m": dp.distance_m, "timestamp": dp.timestamp})
-
-    bests = []
-    for seg in segments:
-        best_s = None
-        best_act_id = None
-        count = 0
-        for act_id in act_ids:
-            dp_list = dp_by_act.get(act_id, [])
-            duration = find_segment_times(dp_list, seg.start_distance_m, seg.end_distance_m)
-            if duration is not None:
-                count += 1
-                if best_s is None or duration < best_s:
-                    best_s = duration
-                    best_act_id = act_id
-        bests.append(SegmentBestOut(
-            segment_id=seg.id, name=seg.name,
-            start_distance_m=seg.start_distance_m, end_distance_m=seg.end_distance_m,
-            auto_generated=bool(seg.auto_generated),
-            best_s=best_s, best_activity_id=best_act_id, count=count,
-        ))
-    return bests
-
-
-@router.get("/{route_id}/segments/{segment_id}/times", response_model=List[SegmentTimeEntry])
-async def get_segment_times(
-    route_id: int,
-    segment_id: int,
-    db: AsyncSession = Depends(get_db),
-    current_user: User = Depends(get_current_user),
-):
-    """Return the last 10 times this segment was traversed across matched activities."""
-    from app.services.route_matcher import find_segment_times
-    from app.models.user import ActivityDataPoint
-
-    await _get_owned_route(route_id, current_user.id, db)
-
-    seg_result = await db.execute(
-        select(RouteSegment).where(
-            RouteSegment.id == segment_id, RouteSegment.route_id == route_id
-        )
-    )
-    seg = seg_result.scalar_one_or_none()
-    if not seg:
-        raise HTTPException(status_code=404, detail="Segment not found")
-
-    acts_result = await db.execute(
-        select(Activity)
-        .where(Activity.named_route_id == route_id, Activity.user_id == current_user.id)
-        .order_by(desc(Activity.start_time))
-        .limit(10)
-    )
-    activities = acts_result.scalars().all()
-
-    times = []
-    for act in activities:
-        dp_result = await db.execute(
-            select(ActivityDataPoint)
-            .where(ActivityDataPoint.activity_id == act.id)
-            .order_by(ActivityDataPoint.timestamp)
-        )
-        dps = dp_result.scalars().all()
-        dp_list = [
-            {"distance_m": p.distance_m, "timestamp": p.timestamp}
-            for p in dps
-            if p.distance_m is not None
-        ]
-        duration = find_segment_times(dp_list, seg.start_distance_m, seg.end_distance_m)
-        if duration:
-            times.append(SegmentTimeEntry(
-                activity_id=act.id,
-                date=act.start_time,
-                name=act.name,
-                duration_s=duration,
-            ))
-    return times

backend/app/api/segments.py

@@ -0,0 +1,214 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select, func
+from pydantic import BaseModel
+from typing import Optional, List
+from datetime import datetime
+
+import polyline as polyline_lib
+
+from app.core.database import get_db
+from app.core.security import get_current_user
+from app.models.user import User, Segment, SegmentEffort, Activity, ActivityDataPoint
+from app.services.route_matcher import haversine_m
+
+router = APIRouter()
+
+
+class SegmentCreate(BaseModel):
+    name: str
+    activity_id: int
+    start_distance_m: float
+    end_distance_m: float
+
+
+class EffortOut(BaseModel):
+    activity_id: int
+    activity_name: str
+    date: Optional[datetime]
+    duration_s: float
+    rank: Optional[int]
+
+
+class SegmentOut(BaseModel):
+    id: int
+    name: str
+    sport_type: Optional[str]
+    polyline: Optional[str]
+    distance_m: Optional[float]
+    created_from_activity_id: Optional[int]
+    effort_count: int = 0
+    best_s: Optional[float] = None
+
+
+class SegmentDetailOut(SegmentOut):
+    leaderboard: List[EffortOut] = []
+
+
+class ActivitySegmentOut(BaseModel):
+    segment_id: int
+    name: str
+    polyline: Optional[str]
+    distance_m: Optional[float]
+    duration_s: float
+    rank: Optional[int]          # this activity's place on the leaderboard
+    best_s: Optional[float]      # current gold time
+    effort_count: int
+
+
+def _bbox(coords):
+    lats = [c[0] for c in coords]
+    lons = [c[1] for c in coords]
+    return {"min_lat": min(lats), "max_lat": max(lats), "min_lon": min(lons), "max_lon": max(lons)}
+
+
+async def _own_segment(segment_id: int, user_id: int, db: AsyncSession) -> Segment:
+    seg = (await db.execute(
+        select(Segment).where(Segment.id == segment_id, Segment.user_id == user_id)
+    )).scalar_one_or_none()
+    if not seg:
+        raise HTTPException(status_code=404, detail="Segment not found")
+    return seg
+
+
+@router.get("/", response_model=List[SegmentOut])
+async def list_segments(
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    segs = (await db.execute(
+        select(Segment).where(Segment.user_id == current_user.id).order_by(Segment.created_at.desc())
+    )).scalars().all()
+    out = []
+    for s in segs:
+        agg = (await db.execute(
+            select(func.count(SegmentEffort.id), func.min(SegmentEffort.duration_s))
+            .where(SegmentEffort.segment_id == s.id)
+        )).one()
+        out.append(SegmentOut(
+            id=s.id, name=s.name, sport_type=s.sport_type, polyline=s.polyline,
+            distance_m=s.distance_m, created_from_activity_id=s.created_from_activity_id,
+            effort_count=agg[0] or 0, best_s=agg[1],
+        ))
+    return out
+
+
+@router.post("/", response_model=SegmentOut)
+async def create_segment(
+    body: SegmentCreate,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    activity = (await db.execute(
+        select(Activity).where(Activity.id == body.activity_id, Activity.user_id == current_user.id)
+    )).scalar_one_or_none()
+    if not activity:
+        raise HTTPException(status_code=404, detail="Activity not found")
+
+    lo, hi = sorted((body.start_distance_m, body.end_distance_m))
+    dps = (await db.execute(
+        select(ActivityDataPoint)
+        .where(ActivityDataPoint.activity_id == activity.id)
+        .order_by(ActivityDataPoint.timestamp)
+    )).scalars().all()
+
+    coords = [
+        (p.latitude, p.longitude)
+        for p in dps
+        if p.distance_m is not None and p.latitude is not None and p.longitude is not None
+        and lo <= p.distance_m <= hi
+    ]
+    if len(coords) < 2:
+        raise HTTPException(status_code=400, detail="Selected range has too few GPS points")
+
+    seg = Segment(
+        user_id=current_user.id,
+        name=body.name.strip() or "Segment",
+        sport_type=activity.sport_type,
+        polyline=polyline_lib.encode(coords),
+        start_lat=coords[0][0], start_lng=coords[0][1],
+        end_lat=coords[-1][0], end_lng=coords[-1][1],
+        distance_m=max(0.0, hi - lo),
+        bounding_box=_bbox(coords),
+        created_from_activity_id=activity.id,
+    )
+    db.add(seg)
+    await db.commit()
+    await db.refresh(seg)
+
+    # Match across all activities in the background.
+    from app.workers.tasks import match_segment
+    match_segment.delay(seg.id)
+
+    return SegmentOut(
+        id=seg.id, name=seg.name, sport_type=seg.sport_type, polyline=seg.polyline,
+        distance_m=seg.distance_m, created_from_activity_id=seg.created_from_activity_id,
+        effort_count=0, best_s=None,
+    )
+
+
+@router.get("/by-activity/{activity_id}", response_model=List[ActivitySegmentOut])
+async def segments_for_activity(
+    activity_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    """Segments that this activity has an effort on, with the activity's place + the gold time."""
+    rows = (await db.execute(
+        select(Segment, SegmentEffort)
+        .join(SegmentEffort, SegmentEffort.segment_id == Segment.id)
+        .where(Segment.user_id == current_user.id, SegmentEffort.activity_id == activity_id)
+        .order_by(Segment.created_at.desc())
+    )).all()
+
+    out = []
+    for seg, effort in rows:
+        agg = (await db.execute(
+            select(func.count(SegmentEffort.id), func.min(SegmentEffort.duration_s))
+            .where(SegmentEffort.segment_id == seg.id)
+        )).one()
+        out.append(ActivitySegmentOut(
+            segment_id=seg.id, name=seg.name, polyline=seg.polyline, distance_m=seg.distance_m,
+            duration_s=effort.duration_s, rank=effort.rank,
+            best_s=agg[1], effort_count=agg[0] or 0,
+        ))
+    return out
+
+
+@router.get("/{segment_id}", response_model=SegmentDetailOut)
+async def get_segment(
+    segment_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    seg = await _own_segment(segment_id, current_user.id, db)
+    rows = (await db.execute(
+        select(SegmentEffort, Activity)
+        .join(Activity, Activity.id == SegmentEffort.activity_id)
+        .where(SegmentEffort.segment_id == seg.id)
+        .order_by(SegmentEffort.duration_s)
+    )).all()
+    leaderboard = [
+        EffortOut(
+            activity_id=e.activity_id, activity_name=a.name,
+            date=e.achieved_at or a.start_time, duration_s=e.duration_s, rank=e.rank,
+        )
+        for e, a in rows
+    ]
+    return SegmentDetailOut(
+        id=seg.id, name=seg.name, sport_type=seg.sport_type, polyline=seg.polyline,
+        distance_m=seg.distance_m, created_from_activity_id=seg.created_from_activity_id,
+        effort_count=len(leaderboard), best_s=leaderboard[0].duration_s if leaderboard else None,
+        leaderboard=leaderboard,
+    )
+
+
+@router.delete("/{segment_id}", status_code=204)
+async def delete_segment(
+    segment_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    seg = await _own_segment(segment_id, current_user.id, db)
+    await db.delete(seg)
+    await db.commit()

backend/app/api/users.py

@@ -19,7 +19,7 @@ from app.core.security import get_current_user
 from app.core.config import settings
 from app.models.user import (
     User, Activity, ActivityDataPoint, ActivityLap, NamedRoute,
-    RouteSegment, PersonalRecord, HealthMetric, WeightLog, GarminConnectConfig,
+    Segment, SegmentEffort, PersonalRecord, HealthMetric, WeightLog, GarminConnectConfig,
 )
 
 router = APIRouter()
@@ -122,12 +122,13 @@ async def delete_user(
     # Ordered deletes: PersonalRecord and the activity/route child tables have no
     # cascade path from User, so remove them before the parents to avoid FK errors.
     activity_ids = select(Activity.id).where(Activity.user_id == user_id)
-    route_ids = select(NamedRoute.id).where(NamedRoute.user_id == user_id)
+    segment_ids = select(Segment.id).where(Segment.user_id == user_id)
 
     await db.execute(delete(PersonalRecord).where(PersonalRecord.user_id == user_id))
     await db.execute(delete(ActivityLap).where(ActivityLap.activity_id.in_(activity_ids)))
     await db.execute(delete(ActivityDataPoint).where(ActivityDataPoint.activity_id.in_(activity_ids)))
-    await db.execute(delete(RouteSegment).where(RouteSegment.route_id.in_(route_ids)))
+    await db.execute(delete(SegmentEffort).where(SegmentEffort.segment_id.in_(segment_ids)))
+    await db.execute(delete(Segment).where(Segment.user_id == user_id))
     await db.execute(delete(Activity).where(Activity.user_id == user_id))
     await db.execute(delete(NamedRoute).where(NamedRoute.user_id == user_id))
     await db.execute(delete(HealthMetric).where(HealthMetric.user_id == user_id))

backend/app/main.py

@@ -6,7 +6,7 @@ import asyncio
 
 from app.core.database import engine, AsyncSessionLocal, Base
 from app.core.config import settings
-from app.api import auth, activities, routes, health, records, upload, profile, garmin_sync, users
+from app.api import auth, activities, routes, health, records, upload, profile, garmin_sync, users, segments
 
 
 async def init_db():
@@ -82,17 +82,14 @@ async def init_db():
     except Exception as e:
         print(f"users.pocketid_allowed_group column migration skipped: {e}")
 
-    # route_segments auto_generated column added after initial creation
+    # goal_weight_kg column on users added after initial creation
     try:
         async with engine.begin() as conn:
             await conn.execute(text(
-                "ALTER TABLE route_segments ADD COLUMN IF NOT EXISTS auto_generated BOOLEAN DEFAULT FALSE"
+                "ALTER TABLE users ADD COLUMN IF NOT EXISTS goal_weight_kg FLOAT"
-            ))
-            await conn.execute(text(
-                "ALTER TABLE route_segments ADD COLUMN IF NOT EXISTS auto_generated_type VARCHAR(20)"
             ))
     except Exception as e:
-        print(f"route_segments column migration skipped: {e}")
+        print(f"users.goal_weight_kg column migration skipped: {e}")
 
     # Backfill avg_hr_day / max_hr_day from intraday_hr for Garmin Connect synced days
     try:
@@ -225,6 +222,7 @@ app.include_router(upload.router, prefix="/api/upload", tags=["upload"])
 app.include_router(profile.router, prefix="/api/profile", tags=["profile"])
 app.include_router(garmin_sync.router, prefix="/api/garmin-sync", tags=["garmin-sync"])
 app.include_router(users.router, prefix="/api/users", tags=["users"])
+app.include_router(segments.router, prefix="/api/segments", tags=["segments"])
 
 
 @app.get("/health")

backend/app/models/user.py

@@ -28,6 +28,7 @@ class User(Base):
     birth_year = Column(Integer, nullable=True)
     height_cm = Column(Float, nullable=True)
     biological_sex = Column(String(8), nullable=True)   # 'male' | 'female'
+    goal_weight_kg = Column(Float, nullable=True)
 
     # PocketID config (stored per-user so admin can set via UI)
     pocketid_issuer = Column(String(512), nullable=True)
@@ -172,22 +173,45 @@ class NamedRoute(Base):
 
     user = relationship("User", back_populates="named_routes")
     activities = relationship("Activity", back_populates="named_route")
-    segments = relationship("RouteSegment", back_populates="route", cascade="all, delete-orphan")
 
 
-class RouteSegment(Base):
+class Segment(Base):
-    __tablename__ = "route_segments"
+    """A user-defined GPS segment (a stretch of road/trail) matched across activities."""
+    __tablename__ = "segments"
 
     id = Column(Integer, primary_key=True)
-    route_id = Column(Integer, ForeignKey("named_routes.id"), nullable=False, index=True)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False, index=True)
     name = Column(String(256), nullable=False)
-    start_distance_m = Column(Float, nullable=False)
+    sport_type = Column(String(64), nullable=True)
-    end_distance_m = Column(Float, nullable=False)
+    polyline = Column(Text, nullable=True)          # encoded GPS geometry of the segment
-    description = Column(Text, nullable=True)
+    start_lat = Column(Float, nullable=True)
-    auto_generated = Column(Boolean, default=False)
+    start_lng = Column(Float, nullable=True)
-    auto_generated_type = Column(String(20), nullable=True)  # '1km' | 'turns' | 'hills'
+    end_lat = Column(Float, nullable=True)
+    end_lng = Column(Float, nullable=True)
+    distance_m = Column(Float, nullable=True)
+    bounding_box = Column(JSON, nullable=True)      # {min_lat,max_lat,min_lon,max_lon}
+    created_from_activity_id = Column(Integer, nullable=True)
+    created_at = Column(DateTime(timezone=True), default=now_utc)
 
-    route = relationship("NamedRoute", back_populates="segments")
+    efforts = relationship("SegmentEffort", back_populates="segment", cascade="all, delete-orphan")
+
+
+class SegmentEffort(Base):
+    """One activity's time over a segment."""
+    __tablename__ = "segment_efforts"
+
+    id = Column(Integer, primary_key=True)
+    segment_id = Column(Integer, ForeignKey("segments.id", ondelete="CASCADE"), nullable=False, index=True)
+    activity_id = Column(Integer, ForeignKey("activities.id", ondelete="CASCADE"), nullable=False, index=True)
+    duration_s = Column(Float, nullable=False)
+    achieved_at = Column(DateTime(timezone=True), nullable=True)
+    rank = Column(Integer, nullable=True)           # 1/2/3 for podium, else null
+
+    __table_args__ = (
+        UniqueConstraint("segment_id", "activity_id", name="uq_segment_effort"),
+    )
+
+    segment = relationship("Segment", back_populates="efforts")
 
 
 class PersonalRecord(Base):

backend/app/services/route_matcher.py

@@ -95,40 +95,57 @@ def routes_are_similar(
     return dist < dtw_threshold_m
 
 
-def find_segment_times(
+def match_segment_in_activity(
-    data_points: list[dict],
+    seg_coords: list[tuple],
-    start_dist_m: float,
+    act_coords: list[tuple],
-    end_dist_m: float,
+    act_times: list,
+    tol_m: float = 30.0,
 ) -> Optional[float]:
     """
-    Given activity data points (with cumulative distance_m),
+    Determine whether an activity track traverses a segment's GPS geometry, and if so
-    find the time to traverse from start_dist_m to end_dist_m.
+    how long it took. Works even when the activity's overall route differs — only the
-    Returns duration in seconds, or None if not found.
+    overlapping stretch matters.
+
+    seg_coords: [(lat, lon), ...] segment geometry (start → end).
+    act_coords: [(lat, lon), ...] activity track, in time order.
+    act_times:  parallel list of datetimes for act_coords.
+
+    Strategy: anchor on the activity point nearest the segment start, then the nearest
+    point (at/after it) to the segment end, then verify a few intermediate segment
+    points are each passed within tolerance between those anchors. Returns the time
+    between the start and end anchors, or None if the activity doesn't follow the segment.
     """
-    start_time = None
+    n = len(act_coords)
-    end_time = None
+    if n < 2 or len(seg_coords) < 2:
-
-    for p in data_points:
-        dist = p.get("distance_m")
-        ts = p.get("timestamp")
-        if dist is None or ts is None:
-            continue
-
-        if start_time is None and dist >= start_dist_m:
-            start_time = ts
-
-        if start_time is not None and dist >= end_dist_m:
-            end_time = ts
-            break
-
-    if start_time and end_time:
-        from datetime import datetime
-        t1 = datetime.fromisoformat(start_time) if isinstance(start_time, str) else start_time
-        t2 = datetime.fromisoformat(end_time) if isinstance(end_time, str) else end_time
-        return (t2 - t1).total_seconds()
-
         return None
 
+    start_pt, end_pt = seg_coords[0], seg_coords[-1]
+
+    si, sd = None, tol_m
+    for i in range(n):
+        d = haversine_m(act_coords[i], start_pt)
+        if d < sd:
+            sd, si = d, i
+    if si is None:
+        return None
+
+    ei, ed = None, tol_m
+    for i in range(si + 1, n):
+        d = haversine_m(act_coords[i], end_pt)
+        if d < ed:
+            ed, ei = d, i
+    if ei is None or ei <= si:
+        return None
+
+    # Verify the activity actually follows the segment shape between the anchors.
+    for frac in (0.25, 0.5, 0.75):
+        sp = seg_coords[int(frac * (len(seg_coords) - 1))]
+        if not any(haversine_m(act_coords[i], sp) <= tol_m for i in range(si, ei + 1)):
+            return None
+
+    dur = (act_times[ei] - act_times[si]).total_seconds()
+    return dur if dur > 0 else None
+
 
 def find_best_split_time(
     data_points: list[dict],
@@ -174,154 +191,6 @@ def find_best_split_time(
     return best
 
 
-def _bearing(p1: tuple, p2: tuple) -> float:
-    """Compass bearing in degrees (0-360) from p1 to p2."""
-    lat1, lon1 = math.radians(p1[0]), math.radians(p1[1])
-    lat2, lon2 = math.radians(p2[0]), math.radians(p2[1])
-    dlon = lon2 - lon1
-    x = math.sin(dlon) * math.cos(lat2)
-    y = math.cos(lat1) * math.sin(lat2) - math.sin(lat1) * math.cos(lat2) * math.cos(dlon)
-    return math.degrees(math.atan2(x, y)) % 360
-
-
-def generate_1km_segments(encoded_polyline: str, total_dist_m: float) -> list[tuple[str, float, float]]:
-    """Generate 1-km splits along a route. Returns list of (name, start_m, end_m)."""
-    if not encoded_polyline:
-        return []
-    km_count = int(total_dist_m / 1000)
-    segments = []
-    for i in range(km_count):
-        segments.append((f"km {i + 1}", float(i * 1000), float((i + 1) * 1000)))
-    remainder = total_dist_m - km_count * 1000
-    if remainder >= 200:
-        segments.append((f"km {km_count + 1}", float(km_count * 1000), total_dist_m))
-    return segments
-
-
-def generate_turn_segments(
-    encoded_polyline: str,
-    turn_angle_deg: float = 45.0,
-) -> list[tuple[str, float, float]]:
-    """Detect sharp turns in a route polyline. Returns list of (name, start_m, end_m)."""
-    coords = decode_polyline_to_coords(encoded_polyline)
-    if len(coords) < 3:
-        return []
-
-    cum_dists = [0.0]
-    for i in range(1, len(coords)):
-        cum_dists.append(cum_dists[-1] + haversine_m(coords[i - 1], coords[i]))
-    total = cum_dists[-1]
-
-    HALF_WINDOW = 100.0  # metres either side of candidate turn point
-
-    turn_centers: list[float] = []
-    for i in range(1, len(coords) - 1):
-        # Find index ~HALF_WINDOW before and after
-        start_i = i
-        while start_i > 0 and cum_dists[i] - cum_dists[start_i] < HALF_WINDOW:
-            start_i -= 1
-        end_i = i
-        while end_i < len(coords) - 1 and cum_dists[end_i] - cum_dists[i] < HALF_WINDOW:
-            end_i += 1
-        if start_i == i or end_i == i:
-            continue
-
-        b1 = _bearing(coords[start_i], coords[i])
-        b2 = _bearing(coords[i], coords[end_i])
-        diff = abs(b2 - b1) % 360
-        if diff > 180:
-            diff = 360 - diff
-        if diff >= turn_angle_deg:
-            turn_centers.append(cum_dists[i])
-
-    if not turn_centers:
-        return []
-
-    # Cluster turns within 150 m of each other → one segment per cluster
-    clusters: list[list[float]] = [[turn_centers[0]]]
-    for d in turn_centers[1:]:
-        if d - clusters[-1][-1] < 150:
-            clusters[-1].append(d)
-        else:
-            clusters.append([d])
-
-    segments = []
-    for cluster in clusters:
-        center = sum(cluster) / len(cluster)
-        start = max(0.0, center - HALF_WINDOW)
-        end = min(total, center + HALF_WINDOW)
-        segments.append((f"Turn at {center / 1000:.1f} km", start, end))
-    return segments
-
-
-def generate_hill_segments(
-    data_points: list[dict],
-    gradient_pct: float = 5.0,
-) -> list[tuple[str, float, float]]:
-    """
-    Detect uphill sections using activity data points (with altitude_m + distance_m).
-    Returns list of (name, start_m, end_m).
-    """
-    pts = [
-        (p["distance_m"], p["altitude_m"])
-        for p in data_points
-        if p.get("distance_m") is not None and p.get("altitude_m") is not None
-    ]
-    if len(pts) < 10:
-        return []
-    pts.sort(key=lambda x: x[0])
-    dists = [p[0] for p in pts]
-    alts = [p[1] for p in pts]
-
-    # Smooth altitude with a sliding window to reduce GPS noise
-    SMOOTH = 10
-    smooth_alts = []
-    for i in range(len(alts)):
-        lo, hi = max(0, i - SMOOTH), min(len(alts), i + SMOOTH + 1)
-        smooth_alts.append(sum(alts[lo:hi]) / (hi - lo))
-
-    grad_threshold = gradient_pct / 100.0
-    MIN_HILL_M = 200.0
-
-    in_hill = False
-    hill_start_idx = 0
-    segments = []
-
-    for i in range(1, len(dists)):
-        d_dist = dists[i] - dists[i - 1]
-        if d_dist <= 0:
-            continue
-        grad = (smooth_alts[i] - smooth_alts[i - 1]) / d_dist
-
-        if grad >= grad_threshold and not in_hill:
-            in_hill = True
-            hill_start_idx = i - 1
-        elif grad < grad_threshold and in_hill:
-            length = dists[i - 1] - dists[hill_start_idx]
-            if length >= MIN_HILL_M:
-                gain = round(smooth_alts[i - 1] - smooth_alts[hill_start_idx])
-                start_km = dists[hill_start_idx] / 1000
-                segments.append((
-                    f"Hill at {start_km:.1f} km (+{gain} m)",
-                    dists[hill_start_idx],
-                    dists[i - 1],
-                ))
-            in_hill = False
-
-    if in_hill:
-        length = dists[-1] - dists[hill_start_idx]
-        if length >= MIN_HILL_M:
-            gain = round(smooth_alts[-1] - smooth_alts[hill_start_idx])
-            start_km = dists[hill_start_idx] / 1000
-            segments.append((
-                f"Hill at {start_km:.1f} km (+{gain} m)",
-                dists[hill_start_idx],
-                dists[-1],
-            ))
-
-    return segments
-
-
 STANDARD_DISTANCES = [
     (400, "400m"),
     (800, "800m"),

backend/app/workers/tasks.py

@@ -199,6 +199,7 @@ def process_activity_file(self, file_path: str, user_id: int, source_type: str,
     compute_personal_records.delay(activity_id, user_id, parsed)
     if parsed.get("sport_type") in ("running", "cycling", "hiking", "walking"):
         detect_route.delay(activity_id, user_id)
+        match_activity_segments.delay(activity_id, user_id)
     return {"activity_id": activity_id, "status": "ok"}
 
 
@@ -412,6 +413,145 @@ def compute_personal_records(activity_id: int, user_id: int, parsed: dict):
         db.commit()
 
 
+def _recompute_segment_ranks(db, segment_id: int):
+    """Assign rank 1/2/3 to the three fastest efforts on a segment, null to the rest."""
+    from app.models.user import SegmentEffort
+    from sqlalchemy import select
+
+    efforts = db.execute(
+        select(SegmentEffort)
+        .where(SegmentEffort.segment_id == segment_id)
+        .order_by(SegmentEffort.duration_s)
+    ).scalars().all()
+    for i, e in enumerate(efforts):
+        e.rank = (i + 1) if i < 3 else None
+
+
+def _activity_track(db, activity_id):
+    """Return (coords, times) for an activity's GPS track in time order."""
+    from app.models.user import ActivityDataPoint
+    from sqlalchemy import select
+
+    dps = db.execute(
+        select(ActivityDataPoint)
+        .where(ActivityDataPoint.activity_id == activity_id)
+        .order_by(ActivityDataPoint.timestamp)
+    ).scalars().all()
+    coords, times = [], []
+    for p in dps:
+        if p.latitude is not None and p.longitude is not None and p.timestamp is not None:
+            coords.append((p.latitude, p.longitude))
+            times.append(p.timestamp)
+    return coords, times
+
+
+def _upsert_effort(db, segment_id, activity, duration_s):
+    from app.models.user import SegmentEffort
+    from sqlalchemy import select
+
+    existing = db.execute(
+        select(SegmentEffort).where(
+            SegmentEffort.segment_id == segment_id,
+            SegmentEffort.activity_id == activity.id,
+        )
+    ).scalar_one_or_none()
+    if existing:
+        existing.duration_s = duration_s
+        existing.achieved_at = activity.start_time
+    else:
+        db.add(SegmentEffort(
+            segment_id=segment_id,
+            activity_id=activity.id,
+            duration_s=duration_s,
+            achieved_at=activity.start_time,
+        ))
+
+
+@celery_app.task(name="match_segment")
+def match_segment(segment_id: int):
+    """Match one segment against every eligible activity and (re)build its leaderboard."""
+    from app.services.route_matcher import (
+        match_segment_in_activity, bounding_boxes_overlap, decode_polyline_to_coords,
+    )
+    from app.core.database import SyncSessionLocal
+    from app.models.user import Segment, Activity
+    from sqlalchemy import select
+
+    with SyncSessionLocal() as db:
+        seg = db.execute(select(Segment).where(Segment.id == segment_id)).scalar_one_or_none()
+        if not seg or not seg.polyline:
+            return {"status": "no_segment"}
+        seg_coords = decode_polyline_to_coords(seg.polyline)
+
+        acts = db.execute(
+            select(Activity).where(
+                Activity.user_id == seg.user_id,
+                Activity.sport_type == seg.sport_type,
+                Activity.polyline != None,
+            )
+        ).scalars().all()
+
+        matched = 0
+        for act in acts:
+            if seg.bounding_box and act.bounding_box and not bounding_boxes_overlap(seg.bounding_box, act.bounding_box):
+                continue
+            coords, times = _activity_track(db, act.id)
+            if len(coords) < 2:
+                continue
+            dur = match_segment_in_activity(seg_coords, coords, times)
+            if dur is None:
+                continue
+            _upsert_effort(db, seg.id, act, dur)
+            matched += 1
+        db.commit()
+        _recompute_segment_ranks(db, seg.id)
+        db.commit()
+    return {"status": "ok", "matched": matched}
+
+
+@celery_app.task(name="match_activity_segments")
+def match_activity_segments(activity_id: int, user_id: int):
+    """Match a newly-ingested activity against all of the user's existing segments."""
+    from app.services.route_matcher import (
+        match_segment_in_activity, bounding_boxes_overlap, decode_polyline_to_coords,
+    )
+    from app.core.database import SyncSessionLocal
+    from app.models.user import Segment, Activity
+    from sqlalchemy import select
+
+    with SyncSessionLocal() as db:
+        act = db.execute(select(Activity).where(Activity.id == activity_id)).scalar_one_or_none()
+        if not act or not act.polyline:
+            return {"status": "no_polyline"}
+        coords, times = _activity_track(db, act.id)
+        if len(coords) < 2:
+            return {"status": "no_track"}
+
+        segs = db.execute(
+            select(Segment).where(
+                Segment.user_id == user_id,
+                Segment.sport_type == act.sport_type,
+            )
+        ).scalars().all()
+
+        touched = []
+        for seg in segs:
+            if not seg.polyline:
+                continue
+            if seg.bounding_box and act.bounding_box and not bounding_boxes_overlap(seg.bounding_box, act.bounding_box):
+                continue
+            dur = match_segment_in_activity(decode_polyline_to_coords(seg.polyline), coords, times)
+            if dur is None:
+                continue
+            _upsert_effort(db, seg.id, act, dur)
+            touched.append(seg.id)
+        db.commit()
+        for sid in touched:
+            _recompute_segment_ranks(db, sid)
+        db.commit()
+    return {"status": "ok", "matched_segments": len(touched)}
+
+
 @celery_app.task(name="process_garmin_health_zip")
 def process_garmin_health_zip(zip_path: str, user_id: int):
     """Extract wellness data from a Garmin Connect export ZIP."""

frontend/src/App.jsx

@@ -8,7 +8,6 @@ import ActivitiesPage from './pages/ActivitiesPage'
 import ActivityDetailPage from './pages/ActivityDetailPage'
 import HealthPage from './pages/HealthPage'
 import RoutesPage from './pages/RoutesPage'
-import SegmentsPage from './pages/SegmentsPage'
 import RecordsPage from './pages/RecordsPage'
 import UploadPage from './pages/UploadPage'
 import ProfilePage from './pages/ProfilePage'
@@ -36,7 +35,6 @@ export default function App() {
         <Route path="activities/:id" element={<ActivityDetailPage />} />
         <Route path="health" element={<HealthPage />} />
         <Route path="routes" element={<RoutesPage />} />
-        <Route path="segments" element={<SegmentsPage />} />
         <Route path="records" element={<RecordsPage />} />
         <Route path="upload" element={<UploadPage />} />
         <Route path="profile" element={<ProfilePage />} />

frontend/src/components/activity/ActivityMap.jsx

@@ -24,6 +24,19 @@ const TILE_LAYERS = {
   },
 }
 
+// Tile options tuned for smoother panning/zooming: keep a larger off-screen
+// buffer of tiles and don't defer loads until the map is idle.
+const TILE_OPTS = { maxZoom: 19, keepBuffer: 6, updateWhenIdle: false, updateWhenZooming: false }
+
+// Slow → fast colour ramp for speed-coloured routes.
+const SPEED_STOPS = ['#3b82f6', '#22c55e', '#eab308', '#f97316', '#ef4444']
+
+function speedColorIndex(speed, min, max) {
+  if (!(max > min)) return 1
+  const t = (speed - min) / (max - min)
+  return Math.min(SPEED_STOPS.length - 1, Math.max(0, Math.floor(t * SPEED_STOPS.length)))
+}
+
 function decodePolyline(encoded) {
   const coords = []
   let index = 0, lat = 0, lng = 0
@@ -39,43 +52,82 @@ function decodePolyline(encoded) {
   return coords
 }
 
-function drawRoute(map, polyline, sportType, trackRef) {
-  if (trackRef.current) {
-    trackRef.current.remove()
-    trackRef.current = null
-  }
-  if (!polyline) return
-
-  const coords = decodePolyline(polyline)
-  if (!coords.length) return
-
-  trackRef.current = L.polyline(coords, {
-    color: sportColor(sportType),
-    weight: 3,
-    opacity: 0.9,
-  }).addTo(map)
-
-  map.fitBounds(trackRef.current.getBounds(), { padding: [20, 20] })
-
 const dot = (color) => L.divIcon({
   html: `<div style="width:12px;height:12px;background:${color};border:2px solid white;border-radius:50%"></div>`,
   iconSize: [12, 12], iconAnchor: [6, 6], className: '',
 })
-  L.marker(coords[0], { icon: dot('#22c55e') }).addTo(map)
+
-  L.marker(coords[coords.length - 1], { icon: dot('#ef4444') }).addTo(map)
+function drawRoute(map, { polyline, dataPoints, sportType, colorMode }, trackRef) {
+  if (trackRef.current) {
+    trackRef.current.remove()
+    trackRef.current = null
   }
 
-export default function ActivityMap({ polyline, dataPoints, hoveredDistance, sportType, mapType = 'dark' }) {
+  // Prefer the data-point track when colouring by speed; fall back to the encoded polyline.
+  const speedPts = (colorMode === 'speed' && dataPoints)
+    ? dataPoints.filter(p => p.latitude != null && p.longitude != null)
+    : []
+
+  const group = L.layerGroup()
+
+  if (speedPts.length >= 2 && speedPts.some(p => p.speed_ms != null)) {
+    const speeds = speedPts.map(p => p.speed_ms).filter(s => s != null && s > 0)
+    speeds.sort((a, b) => a - b)
+    // Clamp the range to the 5th–95th percentile so a couple of GPS spikes don't wash out the ramp.
+    const lo = speeds[Math.floor(speeds.length * 0.05)] ?? 0
+    const hi = speeds[Math.floor(speeds.length * 0.95)] ?? lo + 1
+
+    // Group consecutive points into runs of the same colour bucket → one polyline per run.
+    let runStart = 0
+    let runIdx = speedColorIndex(speedPts[0].speed_ms ?? lo, lo, hi)
+    const flush = (end) => {
+      const coords = speedPts.slice(runStart, end + 1).map(p => [p.latitude, p.longitude])
+      if (coords.length >= 2) {
+        L.polyline(coords, { color: SPEED_STOPS[runIdx], weight: 3, opacity: 0.95 }).addTo(group)
+      }
+    }
+    for (let i = 1; i < speedPts.length; i++) {
+      const idx = speedColorIndex(speedPts[i].speed_ms ?? lo, lo, hi)
+      if (idx !== runIdx) {
+        flush(i)            // include current point so runs join up
+        runStart = i
+        runIdx = idx
+      }
+    }
+    flush(speedPts.length - 1)
+
+    const coords = speedPts.map(p => [p.latitude, p.longitude])
+    L.marker(coords[0], { icon: dot('#22c55e') }).addTo(group)
+    L.marker(coords[coords.length - 1], { icon: dot('#ef4444') }).addTo(group)
+    group.addTo(map)
+    trackRef.current = group
+    map.fitBounds(L.latLngBounds(coords), { padding: [20, 20] })
+    return
+  }
+
+  // Solid single-colour route from the encoded polyline.
+  if (!polyline) return
+  const coords = decodePolyline(polyline)
+  if (!coords.length) return
+  L.polyline(coords, { color: sportColor(sportType), weight: 3, opacity: 0.9 }).addTo(group)
+  L.marker(coords[0], { icon: dot('#22c55e') }).addTo(group)
+  L.marker(coords[coords.length - 1], { icon: dot('#ef4444') }).addTo(group)
+  group.addTo(map)
+  trackRef.current = group
+  map.fitBounds(L.latLngBounds(coords), { padding: [20, 20] })
+}
+
+export default function ActivityMap({ polyline, dataPoints, hoveredDistance, sportType, mapType = 'street', colorMode = 'speed', onMapClick }) {
   const mapRef = useRef(null)
   const mapInstanceRef = useRef(null)
   const markerRef = useRef(null)
   const trackRef = useRef(null)
   const tileLayerRef = useRef(null)
-  const polylineRef = useRef(polyline)
+  const drawArgsRef = useRef({ polyline, dataPoints, sportType, colorMode })
-  const sportTypeRef = useRef(sportType)
+  const clickRef = useRef(onMapClick)
 
-  useEffect(() => { polylineRef.current = polyline }, [polyline])
+  drawArgsRef.current = { polyline, dataPoints, sportType, colorMode }
-  useEffect(() => { sportTypeRef.current = sportType }, [sportType])
+  useEffect(() => { clickRef.current = onMapClick }, [onMapClick])
 
   useEffect(() => {
     if (!mapRef.current || mapInstanceRef.current) return
@@ -83,13 +135,16 @@ export default function ActivityMap({ polyline, dataPoints, hoveredDistance, spo
     mapInstanceRef.current = L.map(mapRef.current, {
       zoomControl: true,
       attributionControl: true,
+      preferCanvas: true,
     })
 
-    const tile = TILE_LAYERS.dark
+    const tile = TILE_LAYERS.street
-    tileLayerRef.current = L.tileLayer(tile.url, {
+    tileLayerRef.current = L.tileLayer(tile.url, { attribution: tile.attribution, ...TILE_OPTS })
-      attribution: tile.attribution,
+      .addTo(mapInstanceRef.current)
-      maxZoom: 19,
+
-    }).addTo(mapInstanceRef.current)
+    mapInstanceRef.current.on('click', (e) => {
+      if (clickRef.current) clickRef.current({ lat: e.latlng.lat, lng: e.latlng.lng })
+    })
 
     return () => {
       mapInstanceRef.current?.remove()
@@ -99,19 +154,16 @@ export default function ActivityMap({ polyline, dataPoints, hoveredDistance, spo
 
   useEffect(() => {
     if (!mapInstanceRef.current) return
-    const tile = TILE_LAYERS[mapType] || TILE_LAYERS.dark
+    const tile = TILE_LAYERS[mapType] || TILE_LAYERS.street
     if (tileLayerRef.current) tileLayerRef.current.remove()
-    tileLayerRef.current = L.tileLayer(tile.url, {
+    tileLayerRef.current = L.tileLayer(tile.url, { attribution: tile.attribution, ...TILE_OPTS })
-      attribution: tile.attribution,
+      .addTo(mapInstanceRef.current)
-      maxZoom: 19,
-    }).addTo(mapInstanceRef.current)
-    drawRoute(mapInstanceRef.current, polylineRef.current, sportTypeRef.current, trackRef)
   }, [mapType])
 
   useEffect(() => {
     if (!mapInstanceRef.current) return
-    drawRoute(mapInstanceRef.current, polyline, sportType, trackRef)
+    drawRoute(mapInstanceRef.current, drawArgsRef.current, trackRef)
-  }, [polyline, sportType])
+  }, [polyline, sportType, colorMode, dataPoints])
 
   useEffect(() => {
     if (!mapInstanceRef.current || !dataPoints || hoveredDistance == null) return

frontend/src/components/activity/LapTable.jsx

@@ -2,8 +2,9 @@ import { formatDuration, formatDistance, formatPace, formatHeartRate, formatCade
 
 const RUNNING_TYPES = new Set(['running', 'hiking', 'walking'])
 
-export default function LapTable({ laps, sportType }) {
+export default function LapTable({ laps, sportType, lapBests }) {
   const showPower = !RUNNING_TYPES.has(sportType?.toLowerCase())
+  const hasBests = lapBests && Object.keys(lapBests).length > 0
   return (
     <div className="overflow-x-auto">
       <table className="w-full text-sm">
@@ -12,6 +13,8 @@ export default function LapTable({ laps, sportType }) {
             <th className="text-left pb-2 font-medium">Lap</th>
             <th className="text-right pb-2 font-medium">Distance</th>
             <th className="text-right pb-2 font-medium">Time</th>
+            {hasBests && <th className="text-right pb-2 font-medium">Best</th>}
+            {hasBests && <th className="text-right pb-2 font-medium">Δ</th>}
             <th className="text-right pb-2 font-medium">Pace</th>
             <th className="text-right pb-2 font-medium">Avg HR</th>
             <th className="text-right pb-2 font-medium">Cadence</th>
@@ -19,11 +22,25 @@ export default function LapTable({ laps, sportType }) {
           </tr>
         </thead>
         <tbody>
-          {laps.map((lap) => (
+          {laps.map((lap) => {
+            const best = hasBests ? lapBests[String(lap.lap_number)] : null
+            const delta = best != null && lap.duration_s != null ? lap.duration_s - best : null
+            const isBest = delta != null && delta <= 0.5
+            return (
               <tr key={lap.lap_number} className="border-b border-gray-800/50 hover:bg-gray-800/30 transition-colors">
                 <td className="py-2 text-gray-400">{lap.lap_number}</td>
                 <td className="py-2 text-right text-gray-200">{formatDistance(lap.distance_m)}</td>
-              <td className="py-2 text-right text-gray-200">{formatDuration(lap.duration_s)}</td>
+                <td className={`py-2 text-right ${isBest ? 'text-yellow-400 font-semibold' : 'text-gray-200'}`}>{formatDuration(lap.duration_s)}</td>
+                {hasBests && (
+                  <td className="py-2 text-right font-mono text-gray-500">{best != null ? formatDuration(best) : '--'}</td>
+                )}
+                {hasBests && (
+                  <td className={`py-2 text-right font-mono ${
+                    delta == null ? 'text-gray-700' : isBest ? 'text-yellow-400' : delta < 0 ? 'text-green-400' : 'text-red-400'
+                  }`}>
+                    {delta == null ? '--' : isBest ? '🏆' : `${delta > 0 ? '+' : '−'}${formatDuration(Math.abs(delta))}`}
+                  </td>
+                )}
                 <td className="py-2 text-right text-gray-200">{formatPace(lap.avg_speed_ms, sportType)}</td>
                 <td className="py-2 text-right">
                   <span className="text-red-400">{formatHeartRate(lap.avg_heart_rate)}</span>
@@ -37,7 +54,8 @@ export default function LapTable({ laps, sportType }) {
                   </td>
                 )}
               </tr>
-          ))}
+            )
+          })}
         </tbody>
       </table>
     </div>

frontend/src/components/activity/MetricTimeline.jsx

@@ -1,10 +1,26 @@
 import { useMemo } from 'react'
 import {
-  ComposedChart, Line, XAxis, YAxis, CartesianGrid, Tooltip,
+  ComposedChart, Line, Scatter, ReferenceLine, XAxis, YAxis, CartesianGrid, Tooltip,
   ResponsiveContainer,
 } from 'recharts'
 import { formatPace, formatCadence } from '../../utils/format'
 
+// Running cadence colour bands (steps per minute). Cadence is stored halved for
+// running, so spm = stored × 2.
+function cadenceColor(spm) {
+  if (spm < 153) return '#ef4444'   // red — slow
+  if (spm < 164) return '#f97316'   // orange — moderate
+  if (spm < 174) return '#22c55e'   // green — good recreational
+  if (spm < 184) return '#3b82f6'   // blue — experienced
+  return '#a855f7'                  // purple — elite
+}
+
+const renderCadenceDot = (props) => {
+  const { cx, cy, payload } = props
+  if (cx == null || cy == null || payload?.cadence == null) return null
+  return <circle cx={cx} cy={cy} r={2} fill={cadenceColor(payload.cadence * 2)} />
+}
+
 function downsample(points, maxPoints = 500) {
   if (points.length <= maxPoints) return points
   const step = Math.ceil(points.length / maxPoints)
@@ -133,6 +149,13 @@ export default function MetricTimeline({ dataPoints, activeMetrics, metrics, onH
                   content={<CustomTooltip metrics={metrics} sportType={sportType} onHover={onHoverDistance} />}
                   isAnimationActive={false}
                 />
+                {metric.key === 'cadence' && sportType === 'running' ? (
+                  <>
+                    {/* 165 spm guide → 82.5 in stored (halved) units */}
+                    <ReferenceLine y={82.5} stroke="#22c55e" strokeDasharray="4 4" strokeWidth={1.5} />
+                    <Scatter dataKey="cadence" shape={renderCadenceDot} isAnimationActive={false} />
+                  </>
+                ) : (
                   <Line
                     type="monotone"
                     dataKey={metric.key}
@@ -142,6 +165,7 @@ export default function MetricTimeline({ dataPoints, activeMetrics, metrics, onH
                     isAnimationActive={false}
                     connectNulls={false}
                   />
+                )}
               </ComposedChart>
             </ResponsiveContainer>
           </div>

frontend/src/components/activity/SegmentsPanel.jsx

@@ -0,0 +1,78 @@
+import { useState } from 'react'
+import { useQuery, useQueryClient } from '@tanstack/react-query'
+import api from '../../utils/api'
+import { formatDuration, formatDistance } from '../../utils/format'
+
+const MEDALS = { 1: '🥇', 2: '🥈', 3: '🥉' }
+
+function Leaderboard({ segmentId }) {
+  const { data } = useQuery({
+    queryKey: ['segment', segmentId],
+    queryFn: () => api.get(`/segments/${segmentId}`).then(r => r.data),
+  })
+  if (!data) return <p className="text-xs text-gray-600 py-2">Loading…</p>
+  if (!data.leaderboard?.length) return <p className="text-xs text-gray-600 py-2">No efforts yet — still matching.</p>
+  return (
+    <div className="space-y-0.5 py-1">
+      {data.leaderboard.map((e, i) => (
+        <div key={e.activity_id} className="flex items-center gap-2 text-xs">
+          <span className="w-5 text-right">{MEDALS[e.rank] || i + 1}</span>
+          <span className="font-mono text-gray-200 w-14 text-right">{formatDuration(e.duration_s)}</span>
+          <a href={`/activities/${e.activity_id}`} className="text-gray-400 hover:text-blue-400 truncate flex-1">{e.activity_name}</a>
+        </div>
+      ))}
+    </div>
+  )
+}
+
+export default function SegmentsPanel({ segments }) {
+  const qc = useQueryClient()
+  const [open, setOpen] = useState(null)
+
+  const remove = async (id) => {
+    if (!confirm('Delete this segment?')) return
+    await api.delete(`/segments/${id}`)
+    qc.invalidateQueries()
+  }
+
+  return (
+    <div className="space-y-1">
+      <div className="flex items-center gap-3 pb-1.5 border-b border-gray-800 text-xs text-gray-600 uppercase tracking-wide">
+        <span className="flex-1">Segment</span>
+        <span className="w-14 text-right">This run</span>
+        <span className="w-14 text-right">Best</span>
+        <span className="w-10 text-right">Place</span>
+      </div>
+      {segments.map(seg => {
+        const isPodium = seg.rank && seg.rank <= 3
+        const delta = seg.best_s != null ? seg.duration_s - seg.best_s : null
+        return (
+          <div key={seg.segment_id} className="border-b border-gray-800/40">
+            <div className="flex items-center gap-3 py-1.5 text-sm">
+              <button onClick={() => setOpen(open === seg.segment_id ? null : seg.segment_id)}
+                className="flex-1 text-left text-gray-300 text-xs truncate hover:text-white">
+                {seg.name}
+                <span className="text-gray-600 ml-2">{formatDistance(seg.distance_m)}</span>
+              </button>
+              <span className={`font-mono text-xs w-14 text-right ${isPodium ? 'text-yellow-400 font-semibold' : 'text-gray-200'}`}>
+                {formatDuration(seg.duration_s)}
+              </span>
+              <span className="font-mono text-xs w-14 text-right text-gray-500">
+                {seg.best_s != null ? formatDuration(seg.best_s) : '--'}
+              </span>
+              <span className="w-10 text-right text-xs">
+                {isPodium
+                  ? <span title="New podium time on this activity">{MEDALS[seg.rank]}</span>
+                  : delta != null
+                    ? <span className="text-red-400 font-mono">+{formatDuration(delta)}</span>
+                    : <span className="text-gray-700">--</span>}
+              </span>
+              <button onClick={() => remove(seg.segment_id)} className="text-gray-700 hover:text-red-400 text-xs" title="Delete segment">✕</button>
+            </div>
+            {open === seg.segment_id && <Leaderboard segmentId={seg.segment_id} />}
+          </div>
+        )
+      })}
+    </div>
+  )
+}

frontend/src/components/ui/Layout.jsx

@@ -1,12 +1,13 @@
+import { useEffect } from 'react'
 import { Outlet, NavLink, useNavigate } from 'react-router-dom'
 import { useAuthStore } from '../../hooks/useAuth'
+import { useSyncStore, syncProgressPct } from '../../hooks/useSync'
 
 const nav = [
   { to: '/', label: 'Dashboard', icon: '📊', exact: true },
   { to: '/activities', label: 'Activities', icon: '🏃' },
   { to: '/health', label: 'Health', icon: '❤️' },
   { to: '/routes', label: 'Routes', icon: '🗺️' },
-  { to: '/segments', label: 'Segments', icon: '📏' },
   { to: '/records', label: 'Records', icon: '🏆' },
   { to: '/upload', label: 'Import', icon: '⬆️' },
   { to: '/profile', label: 'Profile', icon: '⚙️' },
@@ -16,6 +17,12 @@ const nav = [
 export default function Layout() {
   const { user, logout } = useAuthStore()
   const navigate = useNavigate()
+  const { inProgress, status, startPolling, stopPolling } = useSyncStore()
+
+  useEffect(() => {
+    startPolling()
+    return () => stopPolling()
+  }, [])
 
   const handleLogout = () => {
     logout()
@@ -48,6 +55,20 @@ export default function Layout() {
           ))}
         </nav>
 
+        {inProgress && (
+          <div className="px-4 py-3 border-t border-gray-800 space-y-1.5">
+            <div className="flex items-center gap-2 text-xs text-blue-400">
+              <span className="inline-block w-2 h-2 rounded-full bg-blue-400 animate-pulse" />
+              Garmin sync
+            </div>
+            <div className="h-1.5 bg-gray-800 rounded-full overflow-hidden">
+              <div className="h-full bg-blue-500 rounded-full transition-all duration-700"
+                style={{ width: `${syncProgressPct(status)}%` }} />
+            </div>
+            <p className="text-xs text-gray-500 truncate">{status || 'Starting sync…'}</p>
+          </div>
+        )}
+
         <div className="px-4 py-4 border-t border-gray-800">
           <button onClick={handleLogout}
             className="w-full text-left text-xs text-gray-500 hover:text-gray-300 transition-colors">

frontend/src/hooks/useSync.js

@@ -0,0 +1,87 @@
+import { create } from 'zustand'
+import api from '../utils/api'
+
+// A status string is "terminal" when the sync has finished (success, partial, or error).
+const isTerminal = (s) =>
+  s.startsWith('OK') || s.startsWith('Partial') || s.startsWith('Auth error') ||
+  s.startsWith('Credentials') || s.startsWith('Connected')
+
+// Map a Garmin sync status string to an approximate completion percentage.
+export function syncProgressPct(status) {
+  if (!status) return 3
+  if (status.startsWith('Connecting')) return 10
+  if (status.startsWith('Syncing activities')) {
+    const m = status.match(/(\d+)\/(\d+)/)
+    if (m && +m[2] > 0) return 15 + Math.round((+m[1] / +m[2]) * 30)
+    return 20
+  }
+  if (status.startsWith('Syncing wellness')) {
+    const m = status.match(/(\d+)\/(\d+)/)
+    if (m && +m[2] > 0) return 45 + Math.round((+m[1] / +m[2]) * 45)
+    return 50
+  }
+  return 3
+}
+
+export function syncPhase(status) {
+  if (!status) return -1
+  if (status.startsWith('Connecting') || status.startsWith('Starting')) return 0
+  if (status.startsWith('Syncing activities')) return 1
+  if (status.startsWith('Syncing wellness')) return 2
+  return -1
+}
+
+let pollTimer = null
+
+export const useSyncStore = create((set, get) => ({
+  status: '',
+  inProgress: false,
+  connected: false,
+  lastSyncAt: null,
+  email: '',
+
+  poll: async () => {
+    try {
+      const { data } = await api.get('/garmin-sync/config')
+      const status = data?.last_sync_status ?? ''
+      const inProgress = !!status && !isTerminal(status)
+      set({
+        status, inProgress,
+        connected: !!data?.connected,
+        lastSyncAt: data?.last_sync_at ?? null,
+        email: data?.email ?? '',
+      })
+      return inProgress
+    } catch {
+      return get().inProgress
+    }
+  },
+
+  // Adaptive polling: fast while a sync runs, slow when idle. Runs for the
+  // lifetime of the app (started by Layout) so the floating bar stays accurate
+  // no matter which page you're on.
+  startPolling: () => {
+    if (pollTimer) return
+    const tick = async () => {
+      const inProgress = await get().poll()
+      pollTimer = setTimeout(tick, inProgress ? 3000 : 20000)
+    }
+    tick()
+  },
+
+  stopPolling: () => {
+    if (pollTimer) { clearTimeout(pollTimer); pollTimer = null }
+  },
+
+  trigger: async () => {
+    set({ inProgress: true, status: 'Starting sync…' })
+    try {
+      await api.post('/garmin-sync/trigger')
+    } catch {
+      set({ inProgress: false })
+      return
+    }
+    get().stopPolling()
+    get().startPolling()
+  },
+}))

frontend/src/pages/ActivityDetailPage.jsx

@@ -1,25 +1,27 @@
-import { useParams, Link } from 'react-router-dom'
+import { useParams } from 'react-router-dom'
-import { useQuery } from '@tanstack/react-query'
+import { useQuery, useQueryClient } from '@tanstack/react-query'
 import { useState, useMemo } from 'react'
 import api from '../utils/api'
 import ActivityMap from '../components/activity/ActivityMap'
 import MetricTimeline from '../components/activity/MetricTimeline'
 import HRZoneBar from '../components/activity/HRZoneBar'
 import LapTable from '../components/activity/LapTable'
+import SegmentsPanel from '../components/activity/SegmentsPanel'
 import StatCard from '../components/ui/StatCard'
 import {
   formatDuration, formatDistance, formatPace, formatElevation,
   formatHeartRate, formatDateTime, formatCadence, sportIcon,
 } from '../utils/format'
 
-function segmentTime(points, startM, endM) {
+// Find the cumulative distance along the track nearest a clicked lat/lng.
-  let t0 = null
+function nearestDistance(points, lat, lng) {
+  let best = null, bestD = Infinity
   for (const p of points) {
-    if (t0 === null && p.distance_m >= startM) t0 = new Date(p.timestamp).getTime()
+    if (p.latitude == null || p.longitude == null || p.distance_m == null) continue
-    if (t0 !== null && p.distance_m >= endM)
+    const d = (p.latitude - lat) ** 2 + (p.longitude - lng) ** 2
-      return (new Date(p.timestamp).getTime() - t0) / 1000
+    if (d < bestD) { bestD = d; best = p.distance_m }
   }
-  return null
+  return best
 }
 
 const METRICS = [
@@ -36,7 +38,12 @@ export default function ActivityDetailPage() {
   const [activeMetrics, setActiveMetrics] = useState(['heart_rate', 'speed_ms', 'altitude_m'])
   const [hoveredDistance, setHoveredDistance] = useState(null)
   const [mapHeight, setMapHeight] = useState(420)
-  const [mapType, setMapType] = useState('dark')
+  const [mapType, setMapType] = useState('street')
+  const [colorMode, setColorMode] = useState('speed')
+  const [segCreate, setSegCreate] = useState(false)
+  const [segPoints, setSegPoints] = useState([])   // [{distance_m}, ...] up to 2
+  const [segName, setSegName] = useState('')
+  const qc = useQueryClient()
 
   const { data: activity, isLoading } = useQuery({
     queryKey: ['activity', id],
@@ -55,17 +62,36 @@ export default function ActivityDetailPage() {
     enabled: !!activity,
   })
 
-  const { data: segments } = useQuery({
+  const { data: actSegments } = useQuery({
-    queryKey: ['segments', activity?.named_route_id],
+    queryKey: ['activity-segments', id],
-    queryFn: () => api.get(`/routes/${activity.named_route_id}/segments`).then(r => r.data),
+    queryFn: () => api.get(`/segments/by-activity/${id}`).then(r => r.data),
+    enabled: !!activity,
+  })
+
+  const { data: lapBests } = useQuery({
+    queryKey: ['lap-bests', id],
+    queryFn: () => api.get(`/activities/${id}/lap-bests`).then(r => r.data),
     enabled: !!activity?.named_route_id,
   })
 
-  const { data: segmentBests } = useQuery({
+  const handleMapClick = ({ lat, lng }) => {
-    queryKey: ['segment-bests', activity?.named_route_id],
+    if (!segCreate || !dataPoints) return
-    queryFn: () => api.get(`/routes/${activity.named_route_id}/segment-bests`).then(r => r.data),
+    const dist = nearestDistance(dataPoints, lat, lng)
-    enabled: !!activity?.named_route_id,
+    if (dist == null) return
+    setSegPoints(prev => (prev.length >= 2 ? [{ distance_m: dist }] : [...prev, { distance_m: dist }]))
+  }
+
+  const createSegment = async () => {
+    const [a, b] = segPoints
+    await api.post('/segments', {
+      name: segName.trim() || 'Segment',
+      activity_id: Number(id),
+      start_distance_m: a.distance_m,
+      end_distance_m: b.distance_m,
     })
+    setSegCreate(false); setSegPoints([]); setSegName('')
+    qc.invalidateQueries({ queryKey: ['activity-segments', id] })
+  }
 
   const toggleMetric = (key) => {
     setActiveMetrics(prev =>
@@ -140,9 +166,31 @@ export default function ActivityDetailPage() {
                 {t}
               </button>
             ))}
+            {dataPoints?.length > 0 && (
+              <button
+                onClick={() => { setSegCreate(c => !c); setSegPoints([]); setSegName('') }}
+                className={`text-xs px-2.5 py-1 rounded-full transition-colors ml-2 ${
+                  segCreate ? 'bg-green-600 text-white' : 'text-gray-400 hover:text-white bg-gray-800'
+                }`}
+              >
+                + Segment
+              </button>
+            )}
           </div>
           <div className="flex items-center gap-2">
-            <span className="text-xs text-gray-500">Height:</span>
+            <span className="text-xs text-gray-500">Route:</span>
+            {[['speed', 'Speed'], ['solid', 'Solid']].map(([mode, label]) => (
+              <button
+                key={mode}
+                onClick={() => setColorMode(mode)}
+                className={`text-xs px-2.5 py-1 rounded-full transition-colors ${
+                  colorMode === mode ? 'bg-blue-600 text-white' : 'text-gray-400 hover:text-white bg-gray-800'
+                }`}
+              >
+                {label}
+              </button>
+            ))}
+            <span className="text-xs text-gray-500 ml-2">Height:</span>
             {[280, 420, 560].map(h => (
               <button
                 key={h}
@@ -156,6 +204,34 @@ export default function ActivityDetailPage() {
             ))}
           </div>
         </div>
+        {segCreate && (
+          <div className="flex flex-wrap items-center gap-3 px-4 py-2 border-b border-gray-800 bg-green-900/10 text-xs">
+            <span className="text-green-400">
+              Click two points on the route to mark the segment start and end.
+            </span>
+            <span className="text-gray-400">
+              Start: {segPoints[0] ? `${(segPoints[0].distance_m / 1000).toFixed(2)} km` : '—'}
+              {' · '}End: {segPoints[1] ? `${(segPoints[1].distance_m / 1000).toFixed(2)} km` : '—'}
+            </span>
+            {segPoints.length === 2 && (
+              <>
+                <input
+                  value={segName}
+                  onChange={e => setSegName(e.target.value)}
+                  placeholder="Segment name"
+                  className="bg-gray-800 border border-gray-700 rounded-lg px-2 py-1 text-white focus:outline-none focus:ring-2 focus:ring-green-500"
+                />
+                <button onClick={createSegment} disabled={!segName.trim()}
+                  className="bg-green-600 hover:bg-green-700 disabled:opacity-40 text-white px-3 py-1 rounded-lg">
+                  Create
+                </button>
+              </>
+            )}
+            {segPoints.length > 0 && (
+              <button onClick={() => setSegPoints([])} className="text-gray-400 hover:text-white">Reset</button>
+            )}
+          </div>
+        )}
         <div style={{ height: mapHeight }}>
           <ActivityMap
             polyline={activity.polyline}
@@ -163,6 +239,8 @@ export default function ActivityDetailPage() {
             hoveredDistance={hoveredDistance}
             sportType={activity.sport_type}
             mapType={mapType}
+            colorMode={colorMode}
+            onMapClick={segCreate ? handleMapClick : undefined}
           />
         </div>
       </div>
@@ -202,50 +280,18 @@ export default function ActivityDetailPage() {
       </div>
 
       {/* Laps + Segments side by side */}
-      {((laps && laps.length > 0) || (segments && segments.length > 0 && dataPoints)) && (
+      {((laps && laps.length > 0) || (actSegments && actSegments.length > 0)) && (
         <div className="grid grid-cols-1 lg:grid-cols-2 gap-4">
           {laps && laps.length > 0 && (
             <div className="bg-gray-900 rounded-xl border border-gray-800 p-4">
               <h3 className="text-sm font-medium text-gray-300 mb-3">Laps</h3>
-              <LapTable laps={laps} sportType={activity.sport_type} />
+              <LapTable laps={laps} sportType={activity.sport_type} lapBests={lapBests} />
             </div>
           )}
-          {segments && segments.length > 0 && dataPoints && (
+          {actSegments && actSegments.length > 0 && (
             <div className="bg-gray-900 rounded-xl border border-gray-800 p-4">
-              <div className="flex items-center justify-between mb-3">
+              <h3 className="text-sm font-medium text-gray-300 mb-3">Segments</h3>
-                <h3 className="text-sm font-medium text-gray-300">Segments</h3>
+              <SegmentsPanel segments={actSegments} />
-                <Link to="/segments" className="text-xs text-blue-400 hover:underline">Manage →</Link>
-              </div>
-              <div className="flex items-center gap-3 pb-1.5 border-b border-gray-800 mb-1">
-                <span className="flex-1 text-xs text-gray-600 uppercase tracking-wide">Segment</span>
-                <span className="font-mono text-xs w-14 text-right text-gray-600 uppercase tracking-wide">This run</span>
-                <span className="font-mono text-xs w-14 text-right text-gray-600 uppercase tracking-wide">Best</span>
-                <span className="font-mono text-xs w-14 text-right text-gray-600 uppercase tracking-wide">Δ</span>
-              </div>
-              <div className="space-y-0.5">
-                {segments.map(seg => {
-                  const t = segmentTime(dataPoints, seg.start_distance_m, seg.end_distance_m)
-                  const best = segmentBests?.find(b => b.segment_id === seg.id)
-                  const isNewBest = t != null && best?.best_s != null && t <= best.best_s + 0.5
-                  const delta = t != null && best?.best_s != null ? t - best.best_s : null
-                  return (
-                    <div key={seg.id} className="flex items-center gap-3 py-1.5 border-b border-gray-800/40 text-sm">
-                      <span className="flex-1 text-gray-300 text-xs truncate">{seg.name}</span>
-                      <span className={`font-mono text-xs w-14 text-right ${isNewBest ? 'text-yellow-400 font-semibold' : 'text-gray-200'}`}>
-                        {t != null ? formatDuration(t) : <span className="text-gray-700">--</span>}
-                      </span>
-                      <span className="font-mono text-xs w-14 text-right text-gray-500">
-                        {best?.best_s != null ? formatDuration(best.best_s) : '--'}
-                      </span>
-                      <span className={`font-mono text-xs w-14 text-right ${
-                        isNewBest ? 'text-yellow-400' : delta == null ? 'text-gray-700' : delta <= 0 ? 'text-green-400' : 'text-red-400'
-                      }`}>
-                        {isNewBest ? '🏆' : delta == null ? '--' : `${delta > 0 ? '+' : ''}${formatDuration(Math.abs(delta))}`}
-                      </span>
-                    </div>
-                  )
-                })}
-              </div>
             </div>
           )}
         </div>

frontend/src/pages/DashboardPage.jsx

@@ -4,11 +4,21 @@ import { BarChart, Bar, XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContaine
 import { startOfWeek, format, subWeeks, eachWeekOfInterval, subDays, addDays } from 'date-fns'
 import api from '../utils/api'
 import StatCard from '../components/ui/StatCard'
+import ActivityMap from '../components/activity/ActivityMap'
 import {
-  formatDuration, formatDistance, formatPace, formatHeartRate,
+  formatDuration, formatDistance, formatPace, formatHeartRate, formatElevation,
   formatDate, sportIcon, formatSleep,
 } from '../utils/format'
 
+function Stat({ label, value }) {
+  return (
+    <div className="bg-gray-900 px-4 py-3 flex flex-col justify-center">
+      <p className="text-xs text-gray-500">{label}</p>
+      <p className="text-lg font-semibold text-white">{value}</p>
+    </div>
+  )
+}
+
 function bbLevelColor(level) {
   if (level == null) return '#6b7280'
   if (level >= 75) return '#3b82f6'
@@ -154,6 +164,7 @@ export default function DashboardPage() {
   })
 
   const latest = healthSummary?.latest
+  const featured = recentActivities?.[0]
 
   return (
     <div className="p-6 space-y-6">
@@ -203,6 +214,37 @@ export default function DashboardPage() {
         </div>
       </div>
 
+      {/* Featured most-recent activity */}
+      {featured && (
+        <div className="bg-gray-900 rounded-xl border border-gray-800 overflow-hidden">
+          <div className="flex items-center justify-between px-4 py-3 border-b border-gray-800">
+            <div className="flex items-center gap-2 min-w-0">
+              <span className="text-xl">{sportIcon(featured.sport_type)}</span>
+              <div className="min-w-0">
+                <Link to={`/activities/${featured.id}`} className="text-sm font-semibold text-white hover:text-blue-400 transition-colors truncate block">
+                  {featured.name}
+                </Link>
+                <p className="text-xs text-gray-500">{formatDate(featured.start_time)}</p>
+              </div>
+            </div>
+            <Link to={`/activities/${featured.id}`} className="text-xs text-blue-400 hover:underline flex-shrink-0">Open →</Link>
+          </div>
+          <div className="grid grid-cols-1 lg:grid-cols-3">
+            <div className="lg:col-span-2 h-64 bg-gray-950">
+              {featured.polyline
+                ? <ActivityMap polyline={featured.polyline} sportType={featured.sport_type} colorMode="solid" />
+                : <div className="flex items-center justify-center h-full text-gray-600 text-sm">No GPS track</div>}
+            </div>
+            <div className="grid grid-cols-2 lg:grid-cols-1 gap-px bg-gray-800/50">
+              <Stat label="Distance" value={formatDistance(featured.distance_m)} />
+              <Stat label="Elevation ↑" value={formatElevation(featured.elevation_gain_m)} />
+              <Stat label="Moving time" value={formatDuration(featured.duration_s)} />
+              <Stat label="Calories" value={featured.calories ? `${Math.round(featured.calories)} kcal` : '--'} />
+            </div>
+          </div>
+        </div>
+      )}
+
       {/* Recent activities */}
       <div className="bg-gray-900 rounded-xl border border-gray-800 p-4">
         <div className="flex items-center justify-between mb-4">

frontend/src/pages/HealthPage.jsx

@@ -1,7 +1,7 @@
 import { useState, useMemo } from 'react'
 import { useQuery, keepPreviousData } from '@tanstack/react-query'
 import {
-  AreaChart, Area, BarChart, Bar, ReferenceLine,
+  AreaChart, Area, BarChart, Bar, ReferenceLine, ReferenceArea,
   XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContainer, Cell,
 } from 'recharts'
 import { format, subDays } from 'date-fns'
@@ -280,6 +280,20 @@ function BodyBatteryChart({ bb, hiresValues, sleepStart, sleepEnd, activities })
                 <Cell key={i} fill={BB_INFERRED_COLOR[d.type]} />
               ))}
             </Bar>
+            {(activities || []).map(a => {
+              const start = new Date(a.start_time).getTime()
+              const end = a.duration_s ? start + a.duration_s * 1000 : start
+              return (
+                <ReferenceArea
+                  key={`area-${a.id}`}
+                  x1={start}
+                  x2={end}
+                  fill="rgba(255,255,255,0.12)"
+                  stroke="rgba(255,255,255,0.25)"
+                  strokeWidth={1}
+                />
+              )
+            })}
             {(activities || []).map(a => (
               <ReferenceLine
                 key={a.id}
@@ -425,7 +439,7 @@ function NavArrow({ onClick, disabled, children }) {
   )
 }
 
-function DailySnapshot({ day, avg30, intradayHr, bodyBattery, bbHires, sleepStages, activities, latestVo2max, birthYear, biologicalSex, onOlder, onNewer, hasOlder, hasNewer }) {
+function DailySnapshot({ day, snapshotWeight, avg30, intradayHr, bodyBattery, bbHires, sleepStages, activities, latestVo2max, birthYear, biologicalSex, onOlder, onNewer, hasOlder, hasNewer }) {
   if (!day) return (
     <div className="text-center py-10 text-gray-600">
       <p className="text-3xl mb-2">📊</p>
@@ -562,11 +576,14 @@ function DailySnapshot({ day, avg30, intradayHr, bodyBattery, bbHires, sleepStag
               <p className="text-xs text-gray-500 mb-0.5">Weight</p>
               <div className="flex items-baseline gap-1.5 flex-wrap">
                 <span className="text-xl font-semibold text-emerald-400">
-                  {day.weight_kg ? day.weight_kg.toFixed(1) : '--'}
+                  {snapshotWeight ? snapshotWeight.kg.toFixed(1) : '--'}
                 </span>
-                {day.weight_kg && <span className="text-xs text-gray-500">kg</span>}
+                {snapshotWeight && <span className="text-xs text-gray-500">kg</span>}
-                {day.body_fat_pct && <span className="text-xs text-gray-500">{day.body_fat_pct.toFixed(1)}% fat</span>}
+                {snapshotWeight?.fat && !snapshotWeight.carried && <span className="text-xs text-gray-500">{snapshotWeight.fat.toFixed(1)}% fat</span>}
               </div>
+              {snapshotWeight?.carried && (
+                <p className="text-xs text-gray-600 mt-0.5">as of {format(new Date(snapshotWeight.date), 'd MMM')}</p>
+              )}
             </div>
           </div>
         </div>
@@ -716,6 +733,10 @@ function SleepChart({ data, selectedDate, onDayClick }) {
   if (!hasData) return (
     <div className="flex items-center justify-center h-36 text-gray-600 text-xs">No sleep data</div>
   )
+  const totals = chartData
+    .map(d => (d.deep || 0) + (d.rem || 0) + (d.light || 0) + (d.awake || 0))
+    .filter(t => t > 0)
+  const avgSleep = totals.length ? +(totals.reduce((a, b) => a + b, 0) / totals.length).toFixed(1) : null
   return (
     <ResponsiveContainer width="100%" height={140}>
       <BarChart
@@ -737,6 +758,12 @@ function SleepChart({ data, selectedDate, onDayClick }) {
         {selectedDate && (
           <ReferenceLine x={selectedDate} stroke="#60a5fa" strokeWidth={1.5} strokeDasharray="4 2" />
         )}
+        <ReferenceLine y={8} stroke="#22c55e" strokeDasharray="4 3" strokeWidth={1.5}
+          label={{ value: '8h', position: 'insideTopRight', fill: '#22c55e', fontSize: 9 }} />
+        {avgSleep != null && (
+          <ReferenceLine y={avgSleep} stroke="#a855f7" strokeDasharray="4 3" strokeWidth={1.5}
+            label={{ value: `avg ${avgSleep}h`, position: 'insideBottomRight', fill: '#a855f7', fontSize: 9 }} />
+        )}
         <Bar dataKey="deep"  name="Deep"  stackId="a" fill="#6366f1" />
         <Bar dataKey="rem"   name="REM"   stackId="a" fill="#8b5cf6" />
         <Bar dataKey="light" name="Light" stackId="a" fill="#a78bfa" />
@@ -746,6 +773,99 @@ function SleepChart({ data, selectedDate, onDayClick }) {
   )
 }
 
+// ── Weight (with goal line + kg ⇄ st/lb toggle) ──────────────────────────────
+
+const KG_TO_LB = 2.2046226218
+
+function fmtStLb(lb) {
+  let st = Math.floor(lb / 14)
+  let r = Math.round(lb - st * 14)
+  if (r === 14) { st += 1; r = 0 }
+  return `${st} st ${r} lb`
+}
+
+function WeightChart({ data, goalKg, selectedDate, onDayClick }) {
+  const [unit, setUnit] = useState(() => localStorage.getItem('weightUnit') || 'kg')
+  const choose = (u) => { setUnit(u); localStorage.setItem('weightUnit', u) }
+  const imperial = unit === 'lb'
+  const toU = (kg) => (imperial ? kg * KG_TO_LB : kg)
+
+  const withWeight = data.filter(d => d.weight_kg != null)
+  const series = withWeight.map(d => ({ date: d.date, w: +toU(d.weight_kg).toFixed(2) }))
+
+  const title = imperial ? 'Weight (st & lb)' : 'Weight (kg)'
+  const toggle = (
+    <div className="flex gap-1">
+      {[['kg', 'kg'], ['lb', 'st/lb']].map(([u, label]) => (
+        <button key={u} onClick={() => choose(u)}
+          className={`text-xs px-2 py-0.5 rounded-full transition-colors ${
+            unit === u ? 'bg-blue-600 text-white' : 'text-gray-400 bg-gray-800 hover:text-white'
+          }`}>
+          {label}
+        </button>
+      ))}
+    </div>
+  )
+
+  if (!series.length) {
+    return (
+      <>
+        <div className="flex items-center justify-between mb-3">
+          <h3 className="text-sm font-medium text-gray-300">{title}</h3>{toggle}
+        </div>
+        <div className="flex items-center justify-center h-36 text-gray-600 text-xs">No weight data</div>
+      </>
+    )
+  }
+
+  const maxKg = Math.max(...withWeight.map(d => d.weight_kg))
+  const minW = Math.min(...series.map(s => s.w))
+  const goalU = goalKg != null ? +toU(goalKg).toFixed(1) : null
+  const yMax = Math.ceil(toU(maxKg + 20))                       // highest weight + 20 kg equivalent
+  const yMin = Math.max(0, Math.floor(minW - (imperial ? 6 : 3)))
+  const fmtVal = (v) => (imperial ? fmtStLb(v) : `${v.toFixed(1)} kg`)
+
+  return (
+    <>
+      <div className="flex items-center justify-between mb-3">
+        <h3 className="text-sm font-medium text-gray-300">{title}</h3>{toggle}
+      </div>
+      <ResponsiveContainer width="100%" height={140}>
+        <AreaChart data={series} margin={{ top: 4, right: 4, bottom: 4, left: 0 }}
+          style={{ cursor: onDayClick ? 'pointer' : 'default' }}
+          onClick={evt => {
+            const p = evt?.activePayload?.[0]?.payload
+            if (p?.date && onDayClick) onDayClick(p.date)
+          }}>
+          <defs>
+            <linearGradient id="grad-weight" x1="0" y1="0" x2="0" y2="1">
+              <stop offset="5%" stopColor="#34d399" stopOpacity={0.3} />
+              <stop offset="95%" stopColor="#34d399" stopOpacity={0} />
+            </linearGradient>
+          </defs>
+          <CartesianGrid strokeDasharray="3 3" stroke="#1f2937" vertical={false} />
+          <XAxis dataKey="date" tick={{ fontSize: 10, fill: '#6b7280' }} axisLine={false} tickLine={false}
+            tickFormatter={d => format(new Date(d), 'MMM d')} interval="preserveStartEnd" />
+          <YAxis domain={[yMin, yMax]} tick={{ fontSize: 10, fill: '#6b7280' }} axisLine={false} tickLine={false}
+            width={36} tickFormatter={v => Math.round(v)} />
+          <Tooltip contentStyle={tooltipStyle} labelFormatter={d => format(new Date(d), 'MMM d, yyyy')}
+            formatter={v => [fmtVal(v), 'Weight']} />
+          {selectedDate && (
+            <ReferenceLine x={selectedDate} stroke="#60a5fa" strokeWidth={1.5} strokeDasharray="4 2" />
+          )}
+          {goalU != null && (
+            <ReferenceLine y={goalU} stroke="#22c55e" strokeDasharray="5 3" strokeWidth={1.5}
+              label={{ value: `Goal ${fmtVal(goalU)}`, position: 'insideTopLeft', fill: '#22c55e', fontSize: 9 }} />
+          )}
+          <Area type="monotone" dataKey="w" stroke="#34d399" strokeWidth={2}
+            fill="url(#grad-weight)" dot={{ fill: '#34d399', r: 3, strokeWidth: 0 }}
+            connectNulls isAnimationActive={false} />
+        </AreaChart>
+      </ResponsiveContainer>
+    </>
+  )
+}
+
 // ── Page ─────────────────────────────────────────────────────────────────────
 
 export default function HealthPage() {
@@ -809,6 +929,15 @@ export default function HealthPage() {
     return found ? found.vo2max : null
   }, [allDaysSorted])
 
+  // Weight for the snapshot: the selected day's, or the most recent earlier reading.
+  const snapshotWeight = useMemo(() => {
+    if (!selectedDay) return null
+    if (selectedDay.weight_kg != null)
+      return { kg: selectedDay.weight_kg, fat: selectedDay.body_fat_pct, carried: false }
+    const earlier = allDaysSorted.find(d => d.weight_kg != null && d.date <= selectedDay.date)
+    return earlier ? { kg: earlier.weight_kg, fat: earlier.body_fat_pct, carried: true, date: earlier.date } : null
+  }, [selectedDay, allDaysSorted])
+
   const { data: intradayData } = useQuery({
     queryKey: ['health-intraday', selectedDay?.date],
     queryFn: () => api.get('/health-metrics/intraday', { params: { date: selectedDay.date } }).then(r => r.data),
@@ -844,6 +973,7 @@ export default function HealthPage() {
 
       <DailySnapshot
         day={selectedDay}
+        snapshotWeight={snapshotWeight}
         avg30={summary?.avg_30d}
         intradayHr={intradayData?.hr_values}
         bodyBattery={intradayData?.body_battery}
@@ -921,13 +1051,10 @@ export default function HealthPage() {
             </div>
 
             <div className="bg-gray-900 rounded-xl border border-gray-800 p-4">
-              <h3 className="text-sm font-medium text-gray-300 mb-3">Weight</h3>
+              <WeightChart
-              <MetricChart
+                data={metrics}
-                data={metrics.filter(d => d.weight_kg != null)}
+                goalKg={profile?.goal_weight_kg}
-                dataKey="weight_kg" color="#34d399"
+                selectedDate={selDateForCharts} onDayClick={handleDayClick} />
-                formatter={v => `${v.toFixed(1)} kg`}
-                selectedDate={selDateForCharts} onDayClick={handleDayClick}
-                connectNulls showDots />
             </div>
 
             <div className="bg-gray-900 rounded-xl border border-gray-800 p-4">
@@ -989,6 +1116,7 @@ export default function HealthPage() {
                 <h3 className="text-sm font-medium text-gray-300 mb-3">VO2 Max</h3>
                 <MetricChart data={metrics} dataKey="vo2max" color="#3b82f6"
                   formatter={v => v.toFixed(1)}
+                  domain={[30, 70]}
                   connectNulls showDots
                   selectedDate={selDateForCharts} onDayClick={handleDayClick} />
               </div>

frontend/src/pages/ProfilePage.jsx

@@ -1,7 +1,8 @@
-import { useState, useEffect, useRef, useMemo } from 'react'
+import { useState, useEffect, useRef } from 'react'
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
 import api from '../utils/api'
 import { useAuthStore } from '../hooks/useAuth'
+import { useSyncStore, syncProgressPct, syncPhase } from '../hooks/useSync'
 
 function Section({ title, children }) {
   return (
@@ -77,25 +78,13 @@ export default function ProfilePage() {
     enabled: !!user?.is_admin,
   })
 
-  const { data: recentMetrics } = useQuery({
-    queryKey: ['health-metrics-recent'],
-    queryFn: () => api.get('/health-metrics/', { params: { limit: 7 } }).then(r => r.data),
-  })
-
   const { data: healthSummary } = useQuery({
     queryKey: ['health-summary'],
     queryFn: () => api.get('/health-metrics/summary').then(r => r.data),
   })
 
-  const avgRestingHr = useMemo(() => {
-    if (!recentMetrics?.length) return null
-    const vals = recentMetrics.filter(m => m.resting_hr != null).map(m => m.resting_hr)
-    if (!vals.length) return null
-    return Math.round(vals.reduce((s, v) => s + v, 0) / vals.length)
-  }, [recentMetrics])
-
   // HR / measurements form
-  const [hrForm, setHrForm] = useState({ max_heart_rate: '', birth_year: '', height_cm: '', biological_sex: '' })
+  const [hrForm, setHrForm] = useState({ max_heart_rate: '', birth_year: '', height_cm: '', biological_sex: '', goal_weight_kg: '' })
   const [hrSaved, setHrSaved] = useState(false)
   const [hrZoneRecalc, setHrZoneRecalc] = useState(false)
   const maxHrChangedRef = useRef(false)
@@ -105,6 +94,7 @@ export default function ProfilePage() {
       birth_year: profile.birth_year || '',
       height_cm: profile.height_cm || '',
       biological_sex: profile.biological_sex || '',
+      goal_weight_kg: profile.goal_weight_kg || '',
     })
   }, [profile])
 
@@ -140,10 +130,8 @@ export default function ProfilePage() {
   const [gcForm, setGcForm] = useState({ email: '', password: '', sync_enabled: true, sync_activities: true, sync_wellness: true, sync_lookback_days: '30' })
   const [gcSaved, setGcSaved] = useState(false)
   const [gcError, setGcError] = useState('')
-  const [gcSyncing, setGcSyncing] = useState(false)
+  const { inProgress: gcSyncing, status: syncStatus, trigger: triggerSync } = useSyncStore()
-  const syncPollRef = useRef(null)
   const gcFormLoaded = useRef(false)
-  useEffect(() => () => { if (syncPollRef.current) clearInterval(syncPollRef.current) }, [])
   useEffect(() => {
     if (garminConfig?.connected && !gcFormLoaded.current) {
       gcFormLoaded.current = true
@@ -177,54 +165,6 @@ export default function ProfilePage() {
       setGcForm({ email: '', password: '', sync_enabled: true, sync_activities: true, sync_wellness: true, sync_lookback_days: '30' })
     },
   })
-  const triggerGarminSync = async () => {
-    setGcSyncing(true)
-    try {
-      await api.post('/garmin-sync/trigger')
-      // Poll every 3s: wait until we've seen an in-progress status, then wait for terminal
-      let seenInProgress = false
-      syncPollRef.current = setInterval(async () => {
-        const result = await refetchGarmin()
-        const status = result.data?.last_sync_status ?? ''
-        const terminal = status.startsWith('OK') || status.startsWith('Partial') || status.startsWith('Auth error')
-        if (!terminal) seenInProgress = true
-        if (seenInProgress && terminal) {
-          clearInterval(syncPollRef.current)
-          syncPollRef.current = null
-          setGcSyncing(false)
-        }
-      }, 3000)
-      // Absolute safety: stop polling after 4 hours but keep bar visible — sync may still be running
-      setTimeout(() => {
-        if (syncPollRef.current) { clearInterval(syncPollRef.current); syncPollRef.current = null }
-      }, 4 * 60 * 60 * 1000)
-    } catch {
-      setGcSyncing(false)
-    }
-  }
-
-  const syncProgressPct = status => {
-    if (!status) return 3
-    if (status.startsWith('Connecting')) return 10
-    if (status.startsWith('Syncing activities')) {
-      const m = status.match(/(\d+)\/(\d+)/)
-      if (m) {
-        const done = parseInt(m[1], 10), total = parseInt(m[2], 10)
-        if (total > 0) return 15 + Math.round(done / total * 30)
-      }
-      return 20
-    }
-    if (status.startsWith('Syncing wellness')) {
-      const m = status.match(/(\d+)\/(\d+)/)
-      if (m) {
-        const done = parseInt(m[1], 10), total = parseInt(m[2], 10)
-        if (total > 0) return 45 + Math.round(done / total * 45)
-      }
-      return 50
-    }
-    return 3
-  }
-
   // PocketID config
   const [pidForm, setPidForm] = useState({ issuer: '', client_id: '', client_secret: '', allowed_group: '' })
   const [pidSaved, setPidSaved] = useState(false)
@@ -285,22 +225,18 @@ export default function ProfilePage() {
           </Field>
         </div>
 
-        {(avgRestingHr || healthSummary?.latest?.weight_kg) && (
+        <div className="grid grid-cols-2 gap-4 pt-3 border-t border-gray-800">
-          <div className="flex gap-6 pt-3 border-t border-gray-800">
+          <Field label="Goal weight (kg)" hint="Shown as a target line on the weight trend chart">
-            {avgRestingHr && (
+            <Input type="number" value={hrForm.goal_weight_kg} placeholder="e.g. 72" min={20} max={500}
-              <div>
+              onChange={e => setHrForm(f => ({ ...f, goal_weight_kg: e.target.value }))} />
-                <p className="text-xs text-gray-500 mb-0.5">Resting HR (7-day avg, from Garmin)</p>
+          </Field>
-                <span className="text-lg font-semibold text-rose-400">{avgRestingHr} bpm</span>
-              </div>
-            )}
           {healthSummary?.latest?.weight_kg && (
             <div>
-                <p className="text-xs text-gray-500 mb-0.5">Weight (from Garmin)</p>
+              <p className="text-xs text-gray-500 mb-0.5">Current weight (from Garmin)</p>
               <span className="text-lg font-semibold text-emerald-400">{healthSummary.latest.weight_kg.toFixed(1)} kg</span>
             </div>
           )}
         </div>
-        )}
 
         <SaveButton
           onClick={() => {
@@ -449,7 +385,7 @@ export default function ProfilePage() {
           {garminConfig?.connected && (
             <>
               <button
-                onClick={triggerGarminSync}
+                onClick={triggerSync}
                 disabled={gcSyncing}
                 className="bg-gray-700 hover:bg-gray-600 disabled:opacity-50 text-white text-sm font-medium px-4 py-2 rounded-lg transition-colors">
                 {gcSyncing ? 'Syncing…' : '↻ Sync now'}
@@ -464,12 +400,9 @@ export default function ProfilePage() {
         </div>
 
         {gcSyncing && (() => {
-          const status = garminConfig?.last_sync_status || ''
+          const status = syncStatus || ''
           const pct = syncProgressPct(status)
-          const phase = status.startsWith('Connecting') ? 0
+          const phase = syncPhase(status)
-            : status.startsWith('Syncing activities') ? 1
-            : status.startsWith('Syncing wellness') ? 2
-            : status.startsWith('OK') || status.startsWith('Partial') ? 3 : -1
           return (
             <div className="space-y-2 pt-1">
               <div className="flex items-center gap-1 text-xs">

frontend/src/pages/RecordsPage.jsx

@@ -14,7 +14,7 @@ const DISTANCE_ORDER = [
   'Half marathon', 'Marathon', '50k', '100k',
 ]
 
-const TABS = ['Distance PRs', 'Route Records', 'Segment Records']
+const TABS = ['Distance PRs', 'Route Records']
 
 function DistancePRs() {
   const [sport, setSport] = useState('running')
@@ -122,7 +122,7 @@ function DistancePRs() {
                     <XAxis dataKey="date" tick={{ fontSize: 10, fill: '#6b7280' }} axisLine={false} tickLine={false}
                       tickFormatter={d => format(new Date(d), 'MMM yy')} />
                     <YAxis tick={{ fontSize: 10, fill: '#6b7280' }} axisLine={false} tickLine={false}
-                      width={40} tickFormatter={formatDuration} reversed />
+                      width={40} tickFormatter={formatDuration} />
                     <Tooltip
                       contentStyle={{ background: '#111827', border: '1px solid #374151', borderRadius: 8, fontSize: 12 }}
                       labelFormatter={d => format(new Date(d), 'MMM d, yyyy')}
@@ -212,120 +212,6 @@ function RouteRecords() {
   )
 }
 
-function SegmentRecords() {
-  const [selectedRouteId, setSelectedRouteId] = useState(null)
-
-  const { data: routes } = useQuery({
-    queryKey: ['routes'],
-    queryFn: () => api.get('/routes/').then(r => r.data),
-  })
-
-  const { data: bests, isLoading } = useQuery({
-    queryKey: ['segment-bests', selectedRouteId],
-    queryFn: () => api.get(`/routes/${selectedRouteId}/segment-bests`).then(r => r.data),
-    enabled: !!selectedRouteId,
-  })
-
-  const kmBests = (bests || []).filter(b => b.name?.startsWith('km '))
-  const theoreticalBest = kmBests.length && kmBests.every(b => b.best_s != null)
-    ? kmBests.reduce((sum, b) => sum + b.best_s, 0)
-    : null
-
-  if (!routes?.length) return (
-    <p className="text-sm text-gray-600">
-      No named routes yet.{' '}
-      <Link to="/routes" className="text-blue-400 hover:underline">Create one on the Routes page.</Link>
-    </p>
-  )
-
-  return (
-    <div className="space-y-4">
-      {/* Route tile grid */}
-      <div className="grid grid-cols-2 sm:grid-cols-3 lg:grid-cols-4 gap-3">
-        {routes.map(r => (
-          <button
-            key={r.id}
-            onClick={() => setSelectedRouteId(r.id === selectedRouteId ? null : r.id)}
-            className={`text-left rounded-xl border p-2 transition-colors ${
-              selectedRouteId === r.id
-                ? 'border-blue-500 bg-blue-900/20'
-                : 'border-gray-800 bg-gray-900 hover:border-gray-600'
-            }`}
-          >
-            <RouteMiniMap
-              polyline={r.reference_polyline}
-              sportType={r.sport_type}
-              width="100%"
-              height={80}
-            />
-            <p className="text-xs font-medium text-white mt-2 truncate">{r.name}</p>
-            {r.distance_m && (
-              <p className="text-xs text-gray-500">{(r.distance_m / 1000).toFixed(1)} km</p>
-            )}
-          </button>
-        ))}
-      </div>
-
-      {selectedRouteId && (
-        isLoading ? (
-          <p className="text-gray-500 text-sm">Loading…</p>
-        ) : !bests?.length ? (
-          <p className="text-gray-600 text-sm">
-            No segments for this route.{' '}
-            <Link to="/segments" className="text-blue-400 hover:underline">Create some on the Segments page.</Link>
-          </p>
-        ) : (
-          <div className="bg-gray-900 rounded-xl border border-gray-800 overflow-hidden">
-            <table className="w-full text-sm">
-              <thead>
-                <tr className="text-xs text-gray-500 border-b border-gray-800 bg-gray-900/80">
-                  <th className="text-left px-4 py-3 font-medium">Segment</th>
-                  <th className="text-right px-4 py-3 font-medium">Length</th>
-                  <th className="text-right px-4 py-3 font-medium">Best time</th>
-                  <th className="text-right px-4 py-3 font-medium">Runs</th>
-                  <th className="px-4 py-3" />
-                </tr>
-              </thead>
-              <tbody>
-                {bests.map(b => (
-                  <tr key={b.segment_id} className="border-b border-gray-800/50 hover:bg-gray-800/40 transition-colors">
-                    <td className="px-4 py-3 text-gray-200">
-                      {b.name}
-                      {b.auto_generated && <span className="ml-2 text-xs text-gray-600">(auto)</span>}
-                    </td>
-                    <td className="px-4 py-3 text-right text-gray-500 text-xs">
-                      {formatDistance(b.end_distance_m - b.start_distance_m)}
-                    </td>
-                    <td className="px-4 py-3 text-right font-mono font-semibold">
-                      {b.best_s != null
-                        ? <span className="text-yellow-400">{formatDuration(b.best_s)}</span>
-                        : <span className="text-gray-700">--</span>}
-                    </td>
-                    <td className="px-4 py-3 text-right text-gray-500 text-xs">{b.count}</td>
-                    <td className="px-4 py-3 text-right">
-                      {b.best_activity_id && (
-                        <Link to={`/activities/${b.best_activity_id}`} className="text-xs text-blue-400 hover:underline">
-                          View →
-                        </Link>
-                      )}
-                    </td>
-                  </tr>
-                ))}
-              </tbody>
-            </table>
-            {theoreticalBest != null && (
-              <div className="flex items-center justify-between px-4 py-3 border-t border-gray-800 bg-gray-900/60">
-                <span className="text-xs text-gray-500">Theoretical best (1km splits only)</span>
-                <span className="font-mono text-sm font-semibold text-blue-400">{formatDuration(theoreticalBest)}</span>
-              </div>
-            )}
-          </div>
-        )
-      )}
-    </div>
-  )
-}
-
 export default function RecordsPage() {
   const [tab, setTab] = useState('Distance PRs')
 
@@ -351,7 +237,6 @@ export default function RecordsPage() {
 
       {tab === 'Distance PRs' && <DistancePRs />}
       {tab === 'Route Records' && <RouteRecords />}
-      {tab === 'Segment Records' && <SegmentRecords />}
     </div>
   )
 }

frontend/src/pages/RoutesPage.jsx

@@ -2,92 +2,9 @@ import { useState } from 'react'
 import { Link } from 'react-router-dom'
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
 import api from '../utils/api'
+import ActivityMap from '../components/activity/ActivityMap'
 import { formatDistance, formatDuration, formatDate, formatPace, sportIcon } from '../utils/format'
 
-function formatSegDist(m) {
-  if (m == null) return '--'
-  return m >= 1000 ? `${(m / 1000).toFixed(2)} km` : `${Math.round(m)} m`
-}
-
-function SegmentsPanel({ routeId, sportType }) {
-  const qc = useQueryClient()
-
-  const { data: segments } = useQuery({
-    queryKey: ['segments', routeId],
-    queryFn: () => api.get(`/routes/${routeId}/segments`).then(r => r.data),
-  })
-
-  const { data: bests } = useQuery({
-    queryKey: ['segment-bests', routeId],
-    queryFn: () => api.get(`/routes/${routeId}/segment-bests`).then(r => r.data),
-  })
-
-  const deleteSeg = useMutation({
-    mutationFn: segId => api.delete(`/routes/${routeId}/segments/${segId}`),
-    onSuccess: () => {
-      qc.invalidateQueries({ queryKey: ['segments', routeId] })
-      qc.invalidateQueries({ queryKey: ['segment-bests', routeId] })
-    },
-  })
-
-  if (!segments?.length) return null
-
-  const bestMap = Object.fromEntries((bests || []).map(b => [b.segment_id, b]))
-
-  const kmSplits = segments.filter(s => s.name.startsWith('km '))
-  const hillsTurns = segments.filter(s => !s.name.startsWith('km '))
-
-  const kmBests = (bests || []).filter(b => b.name?.startsWith('km '))
-  const theoreticalBest = kmBests.length && kmBests.every(b => b.best_s != null)
-    ? kmBests.reduce((sum, b) => sum + b.best_s, 0)
-    : null
-
-  const renderGroup = (group, title) => {
-    if (!group.length) return null
-    return (
-      <div className="space-y-1">
-        <p className="text-xs font-medium text-gray-500 uppercase tracking-wide">{title}</p>
-        {group.map(seg => {
-          const best = bestMap[seg.id]
-          return (
-            <div key={seg.id} className="flex items-center gap-3 py-1.5 border-b border-gray-800/50 text-sm">
-              <span className="flex-1 text-gray-300 text-xs truncate">{seg.name}</span>
-              <span className="text-gray-600 text-xs">{formatSegDist(seg.end_distance_m - seg.start_distance_m)}</span>
-              {best?.best_s != null ? (
-                <span className="font-mono text-yellow-400 text-xs w-14 text-right">{formatDuration(best.best_s)}</span>
-              ) : (
-                <span className="text-gray-700 text-xs w-14 text-right">--</span>
-              )}
-              <button
-                onClick={() => { if (confirm(`Delete "${seg.name}"?`)) deleteSeg.mutate(seg.id) }}
-                className="text-gray-700 hover:text-red-400 transition-colors text-xs ml-1"
-                title="Delete segment"
-              >✕</button>
-            </div>
-          )
-        })}
-      </div>
-    )
-  }
-
-  return (
-    <div className="border-t border-gray-800 pt-4 space-y-3">
-      <div className="flex items-center justify-between">
-        <h3 className="text-sm font-medium text-gray-400">Segments</h3>
-        <Link to="/segments" className="text-xs text-blue-400 hover:underline">Manage →</Link>
-      </div>
-      {renderGroup(kmSplits, '1km Splits')}
-      {renderGroup(hillsTurns, 'Hills & Turns')}
-      {theoreticalBest != null && (
-        <div className="flex items-center justify-between pt-1 border-t border-gray-800/50">
-          <span className="text-xs text-gray-500">Theoretical best (1km splits only)</span>
-          <span className="font-mono text-xs font-semibold text-blue-400">{formatDuration(theoreticalBest)}</span>
-        </div>
-      )}
-    </div>
-  )
-}
-
 // Decode Google encoded polyline to [[lat,lng], ...]
 function decodePolyline(encoded) {
   if (!encoded) return []
@@ -134,47 +51,37 @@ function RouteMap({ polyline, className = '', sportType = '' }) {
 function routeSportStyle(sportType) {
   const t = (sportType || '').toLowerCase()
   if (t.includes('cycl') || t.includes('bike') || t.includes('ride'))
-    return { border: 'border-orange-500/50', selected: 'border-orange-500 bg-orange-900/20', accent: 'text-orange-400', color: '#f97316' }
+    return { border: 'border-orange-500/50', selected: 'border-orange-500 bg-orange-900/20', accent: 'text-orange-400' }
   if (t.includes('run') || t.includes('jog') || t.includes('walk'))
-    return { border: 'border-blue-500/30', selected: 'border-blue-500 bg-blue-900/20', accent: 'text-blue-400', color: '#3b82f6' }
+    return { border: 'border-blue-500/30', selected: 'border-blue-500 bg-blue-900/20', accent: 'text-blue-400' }
-  return { border: 'border-gray-800', selected: 'border-gray-500 bg-gray-800/50', accent: 'text-gray-400', color: '#6b7280' }
+  return { border: 'border-gray-800', selected: 'border-gray-500 bg-gray-800/50', accent: 'text-gray-400' }
 }
 
-export default function RoutesPage() {
+const MEDALS = ['🥇', '🥈', '🥉']
-  const [selected, setSelected] = useState(null)
+
-  const [showCreate, setShowCreate] = useState(false)
+function RouteDetail({ selected, setSelected }) {
-  const [newRoute, setNewRoute] = useState({ name: '', activity_id: '' })
+  const qc = useQueryClient()
   const [merging, setMerging] = useState(false)
   const [mergeTarget, setMergeTarget] = useState('')
-  const qc = useQueryClient()
+  const [editingName, setEditingName] = useState(false)
+  const [nameInput, setNameInput] = useState(selected.name)
 
   const { data: routes } = useQuery({
     queryKey: ['routes'],
     queryFn: () => api.get('/routes/').then(r => r.data),
   })
 
-  // Sort by most completions first
-  const sortedRoutes = [...(routes || [])].sort((a, b) => (b.activity_count || 0) - (a.activity_count || 0))
-
   const { data: routeActivities } = useQuery({
-    queryKey: ['route-activities', selected?.id],
+    queryKey: ['route-activities', selected.id],
     queryFn: () => api.get(`/routes/${selected.id}/activities`).then(r => r.data),
-    enabled: !!selected,
   })
 
-  const { data: recentActivities } = useQuery({
+  const renameRoute = useMutation({
-    queryKey: ['recent-activities-for-route'],
+    mutationFn: name => api.patch(`/routes/${selected.id}`, { name }).then(r => r.data),
-    queryFn: () => api.get('/routes/recent-activities').then(r => r.data),
+    onSuccess: updated => {
-    enabled: showCreate,
-  })
-
-  const createRoute = useMutation({
-    mutationFn: data => api.post('/routes/', data).then(r => r.data),
-    onSuccess: route => {
       qc.invalidateQueries({ queryKey: ['routes'] })
-      setShowCreate(false)
+      setSelected(updated)
-      setNewRoute({ name: '', activity_id: '' })
+      setEditingName(false)
-      setSelected(route)
     },
   })
 
@@ -198,7 +105,161 @@ export default function RoutesPage() {
   })
 
   const fastest = routeActivities?.[0]
-  const otherRoutes = routes?.filter(r => r.id !== selected?.id && r.sport_type === selected?.sport_type) ?? []
+  const crTime = fastest?.duration_s
+  const otherRoutes = (routes || []).filter(r => r.id !== selected.id && r.sport_type === selected.sport_type)
+
+  return (
+    <div className="col-span-full bg-gray-900 rounded-xl border border-gray-800 p-5 space-y-4">
+      <div className="flex items-start justify-between gap-4">
+        <div className="flex gap-4 items-start min-w-0">
+          <div className="w-56 h-40 flex-shrink-0 rounded-lg overflow-hidden border border-gray-800">
+            {selected.reference_polyline
+              ? <ActivityMap polyline={selected.reference_polyline} sportType={selected.sport_type} colorMode="solid" />
+              : <RouteMap polyline={selected.reference_polyline} className="w-full h-full" sportType={selected.sport_type} />}
+          </div>
+          <div className="min-w-0">
+            {editingName ? (
+              <div className="flex items-center gap-2">
+                <input
+                  value={nameInput}
+                  onChange={e => setNameInput(e.target.value)}
+                  onKeyDown={e => { if (e.key === 'Enter' && nameInput.trim()) renameRoute.mutate(nameInput.trim()) }}
+                  autoFocus
+                  className="bg-gray-800 border border-gray-700 rounded-lg px-2 py-1 text-lg text-white focus:outline-none focus:ring-2 focus:ring-blue-500"
+                />
+                <button onClick={() => renameRoute.mutate(nameInput.trim())} disabled={!nameInput.trim() || renameRoute.isPending}
+                  className="text-xs bg-blue-600 hover:bg-blue-700 disabled:opacity-40 text-white px-2 py-1 rounded-lg">Save</button>
+                <button onClick={() => { setEditingName(false); setNameInput(selected.name) }}
+                  className="text-xs text-gray-400 hover:text-white px-1">Cancel</button>
+              </div>
+            ) : (
+              <div className="flex items-center gap-2">
+                <h2 className="text-lg font-semibold text-white truncate">{selected.name}</h2>
+                <button onClick={() => { setNameInput(selected.name); setEditingName(true) }}
+                  className="text-gray-500 hover:text-white text-sm" title="Rename route">✎</button>
+              </div>
+            )}
+            <div className="flex flex-wrap gap-2 mt-1 text-xs text-gray-500">
+              {selected.sport_type && <span className="capitalize">{selected.sport_type}</span>}
+              <span>{formatDistance(selected.distance_m)}</span>
+              {selected.auto_detected && (
+                <span className="text-blue-400 border border-blue-700/40 px-1.5 py-0.5 rounded-full">Auto-detected</span>
+              )}
+            </div>
+          </div>
+        </div>
+        <div className="flex gap-2 flex-shrink-0">
+          <button onClick={() => { setMerging(m => !m); setMergeTarget('') }}
+            className="text-xs bg-gray-800 hover:bg-gray-700 text-gray-300 px-3 py-1.5 rounded-lg transition-colors">
+            Merge
+          </button>
+          <button
+            onClick={() => { if (confirm(`Delete "${selected.name}"? Activities will be unlinked.`)) deleteRoute.mutate(selected.id) }}
+            className="text-xs text-red-500 hover:text-red-400 px-2 py-1.5 rounded-lg transition-colors">
+            Delete
+          </button>
+        </div>
+      </div>
+
+      {/* Merge panel */}
+      {merging && (
+        <div className="bg-yellow-900/20 border border-yellow-700/40 rounded-lg p-3 space-y-2">
+          <p className="text-xs text-yellow-400 font-medium">Merge another route into this one</p>
+          <p className="text-xs text-gray-500">All activities from the selected route will be moved here, then the other route will be deleted.</p>
+          <div className="flex gap-2">
+            <select value={mergeTarget} onChange={e => setMergeTarget(e.target.value)}
+              className="flex-1 bg-gray-800 border border-gray-700 rounded-lg px-3 py-2 text-sm text-white focus:outline-none focus:ring-2 focus:ring-yellow-500">
+              <option value="">Select route to merge in…</option>
+              {otherRoutes.map(r => (
+                <option key={r.id} value={r.id}>{r.name} ({formatDistance(r.distance_m)})</option>
+              ))}
+            </select>
+            <button
+              disabled={!mergeTarget || mergeRoute.isPending}
+              onClick={() => mergeRoute.mutate({ into: selected.id, from: parseInt(mergeTarget) })}
+              className="bg-yellow-600 hover:bg-yellow-700 disabled:opacity-40 text-white text-sm px-4 py-2 rounded-lg transition-colors">
+              Merge
+            </button>
+          </div>
+          {otherRoutes.length === 0 && (
+            <p className="text-xs text-gray-600">No other {selected.sport_type} routes to merge with.</p>
+          )}
+        </div>
+      )}
+
+      {/* Podium */}
+      {routeActivities?.length > 0 && (
+        <div className="grid grid-cols-3 gap-3">
+          {routeActivities.slice(0, 3).map((act, i) => (
+            <Link key={act.id} to={`/activities/${act.id}`}
+              className="bg-gray-800/50 hover:bg-gray-800 rounded-lg p-3 text-center transition-colors">
+              <p className="text-xl">{MEDALS[i]}</p>
+              <p className="font-mono text-lg font-bold text-white">{formatDuration(act.duration_s)}</p>
+              <p className="text-xs text-gray-500">{formatDate(act.start_time)}</p>
+              {i > 0 && crTime != null && (
+                <p className="text-xs text-red-400">+{formatDuration(act.duration_s - crTime)}</p>
+              )}
+            </Link>
+          ))}
+        </div>
+      )}
+
+      {/* All completions */}
+      <h3 className="text-sm font-medium text-gray-400">All completions ({routeActivities?.length ?? 0})</h3>
+      <div className="space-y-1">
+        {routeActivities?.map((act, i) => {
+          const delta = crTime != null ? act.duration_s - crTime : null
+          return (
+            <Link key={act.id} to={`/activities/${act.id}`}
+              className="flex items-center gap-4 px-2 py-2 rounded-lg hover:bg-gray-800/60 transition-colors text-sm group">
+              <span className="text-gray-600 w-5 text-right flex-shrink-0">{i + 1}</span>
+              <span className="text-gray-400 flex-1">{formatDate(act.start_time)}</span>
+              <span className="font-mono text-white font-medium">{formatDuration(act.duration_s)}</span>
+              <span className={`font-mono text-xs w-16 text-right ${i === 0 ? 'text-yellow-400' : 'text-red-400'}`}>
+                {i === 0 ? 'CR' : delta != null ? `+${formatDuration(delta)}` : ''}
+              </span>
+              <span className="text-gray-500 w-20 text-right">{formatPace(act.avg_speed_ms, selected.sport_type)}</span>
+              {act.avg_heart_rate
+                ? <span className="text-red-400 text-xs w-16 text-right">{Math.round(act.avg_heart_rate)} bpm</span>
+                : <span className="w-16" />}
+              <span className="text-gray-700 group-hover:text-gray-400 text-xs transition-colors">→</span>
+            </Link>
+          )
+        })}
+      </div>
+    </div>
+  )
+}
+
+export default function RoutesPage() {
+  const [selected, setSelected] = useState(null)
+  const [showCreate, setShowCreate] = useState(false)
+  const [newRoute, setNewRoute] = useState({ name: '', activity_id: '' })
+  const qc = useQueryClient()
+
+  const { data: routes } = useQuery({
+    queryKey: ['routes'],
+    queryFn: () => api.get('/routes/').then(r => r.data),
+  })
+
+  // Sort by most completions first
+  const sortedRoutes = [...(routes || [])].sort((a, b) => (b.activity_count || 0) - (a.activity_count || 0))
+
+  const { data: recentActivities } = useQuery({
+    queryKey: ['recent-activities-for-route'],
+    queryFn: () => api.get('/routes/recent-activities').then(r => r.data),
+    enabled: showCreate,
+  })
+
+  const createRoute = useMutation({
+    mutationFn: data => api.post('/routes/', data).then(r => r.data),
+    onSuccess: route => {
+      qc.invalidateQueries({ queryKey: ['routes'] })
+      setShowCreate(false)
+      setNewRoute({ name: '', activity_id: '' })
+      setSelected(route)
+    },
+  })
 
   return (
     <div className="p-6 space-y-6">
@@ -256,7 +317,7 @@ export default function RoutesPage() {
         </div>
       )}
 
-      {/* Route tile grid */}
+      {/* Route tile grid — selected route's detail expands inline under its row */}
       {routes?.length === 0 && !showCreate ? (
         <div className="text-center py-12 text-gray-600">
           <p className="text-3xl mb-2">🗺️</p>
@@ -268,9 +329,9 @@ export default function RoutesPage() {
           {sortedRoutes.map(route => {
             const style = routeSportStyle(route.sport_type)
             const isSelected = selected?.id === route.id
-            return (
+            return [
               <button key={route.id}
-                onClick={() => { setSelected(isSelected ? null : route); setMerging(false) }}
+                onClick={() => setSelected(isSelected ? null : route)}
                 className={`text-left rounded-xl border p-2 transition-all ${
                   isSelected ? style.selected : `bg-gray-900 ${style.border} hover:border-gray-600`
                 }`}>
@@ -279,121 +340,16 @@ export default function RoutesPage() {
                 <div className="flex items-center justify-between mt-0.5 gap-1">
                   <span className="text-xs text-gray-500">{formatDistance(route.distance_m)}</span>
                   {route.activity_count > 0 && (
-                    <span className={`text-xs font-medium ${style.accent}`}>
+                    <span className={`text-xs font-medium ${style.accent}`}>{route.activity_count}×</span>
-                      {route.activity_count}×
-                    </span>
                   )}
                 </div>
-                {route.auto_detected && (
+                {route.auto_detected && <span className="text-xs text-gray-600">auto</span>}
-                  <span className="text-xs text-gray-600">auto</span>
+              </button>,
-                )}
+              isSelected && <RouteDetail key={`detail-${route.id}`} selected={selected} setSelected={setSelected} />,
-              </button>
+            ]
-            )
           })}
         </div>
       )}
-
-      {/* Route detail — shown below the tile grid when a route is selected */}
-      {selected && (
-        <div className="space-y-4">
-          <div className="bg-gray-900 rounded-xl border border-gray-800 p-5">
-              <div className="flex items-start justify-between mb-4">
-                <div className="flex gap-4 items-start">
-                  <RouteMap polyline={selected.reference_polyline} className="w-36 h-24 flex-shrink-0" sportType={selected.sport_type} />
-                  <div>
-                    <h2 className="text-lg font-semibold text-white">{selected.name}</h2>
-                    <div className="flex flex-wrap gap-2 mt-1 text-xs text-gray-500">
-                      {selected.sport_type && <span className="capitalize">{selected.sport_type}</span>}
-                      <span>{formatDistance(selected.distance_m)}</span>
-                      {selected.auto_detected && (
-                        <span className="text-blue-400 border border-blue-700/40 px-1.5 py-0.5 rounded-full">Auto-detected</span>
-                      )}
-                    </div>
-                  </div>
-                </div>
-                <div className="flex gap-2 flex-shrink-0">
-                  <button onClick={() => { setMerging(m => !m); setMergeTarget('') }}
-                    className="text-xs bg-gray-800 hover:bg-gray-700 text-gray-300 px-3 py-1.5 rounded-lg transition-colors">
-                    Merge
-                  </button>
-                  <button
-                    onClick={() => { if (confirm(`Delete "${selected.name}"? Activities will be unlinked.`)) deleteRoute.mutate(selected.id) }}
-                    className="text-xs text-red-500 hover:text-red-400 px-2 py-1.5 rounded-lg transition-colors">
-                    Delete
-                  </button>
-                </div>
-              </div>
-
-              {/* Merge panel */}
-              {merging && (
-                <div className="mb-4 bg-yellow-900/20 border border-yellow-700/40 rounded-lg p-3 space-y-2">
-                  <p className="text-xs text-yellow-400 font-medium">Merge another route into this one</p>
-                  <p className="text-xs text-gray-500">All activities from the selected route will be moved here, then the other route will be deleted.</p>
-                  <div className="flex gap-2">
-                    <select value={mergeTarget} onChange={e => setMergeTarget(e.target.value)}
-                      className="flex-1 bg-gray-800 border border-gray-700 rounded-lg px-3 py-2 text-sm text-white focus:outline-none focus:ring-2 focus:ring-yellow-500">
-                      <option value="">Select route to merge in…</option>
-                      {otherRoutes.map(r => (
-                        <option key={r.id} value={r.id}>{r.name} ({formatDistance(r.distance_m)})</option>
-                      ))}
-                    </select>
-                    <button
-                      disabled={!mergeTarget || mergeRoute.isPending}
-                      onClick={() => mergeRoute.mutate({ into: selected.id, from: parseInt(mergeTarget) })}
-                      className="bg-yellow-600 hover:bg-yellow-700 disabled:opacity-40 text-white text-sm px-4 py-2 rounded-lg transition-colors">
-                      Merge
-                    </button>
-                    <button onClick={() => setMerging(false)}
-                      className="text-gray-400 hover:text-white text-sm px-3 py-2 rounded-lg transition-colors">
-                      Cancel
-                    </button>
-                  </div>
-                  {otherRoutes.length === 0 && (
-                    <p className="text-xs text-gray-600">No other {selected.sport_type} routes to merge with.</p>
-                  )}
-                </div>
-              )}
-
-              {/* Course record */}
-              {fastest && (
-                <div className="bg-yellow-900/20 border border-yellow-700/40 rounded-lg p-3 mb-4">
-                  <p className="text-xs text-yellow-600 mb-1">Course record 🏆</p>
-                  <div className="flex items-center gap-4">
-                    <span className="text-xl font-bold text-yellow-400">{formatDuration(fastest.duration_s)}</span>
-                    <span className="text-sm text-gray-400">
-                      {formatDate(fastest.start_time)} · {formatPace(fastest.avg_speed_ms, selected.sport_type)}
-                    </span>
-                  </div>
-                </div>
-              )}
-
-              {/* Activity list */}
-              <h3 className="text-sm font-medium text-gray-400 mb-2">
-                All completions ({routeActivities?.length ?? 0})
-              </h3>
-              <div className="space-y-1">
-                {routeActivities?.map((act, i) => (
-                  <Link key={act.id} to={`/activities/${act.id}`}
-                    className="flex items-center gap-4 px-2 py-2 rounded-lg hover:bg-gray-800/60 transition-colors text-sm group">
-                    <span className="text-gray-600 w-5 text-right flex-shrink-0">{i + 1}</span>
-                    <span className="text-gray-400 flex-1">{formatDate(act.start_time)}</span>
-                    <span className="font-mono text-white font-medium">{formatDuration(act.duration_s)}</span>
-                    <span className="text-gray-500">{formatPace(act.avg_speed_ms, selected.sport_type)}</span>
-                    {act.avg_heart_rate && (
-                      <span className="text-red-400 text-xs">{Math.round(act.avg_heart_rate)} bpm</span>
-                    )}
-                    {i === 0 && (
-                      <span className="text-xs bg-yellow-900/40 text-yellow-400 px-2 py-0.5 rounded-full border border-yellow-700/40">CR</span>
-                    )}
-                    <span className="text-gray-700 group-hover:text-gray-400 text-xs transition-colors">→</span>
-                  </Link>
-                ))}
-              </div>
-
-              <SegmentsPanel routeId={selected.id} sportType={selected.sport_type} />
-          </div>
-        </div>
-      )}
     </div>
   )
 }

frontend/src/pages/SegmentsPage.jsx

@@ -1,365 +0,0 @@
-import { useState } from 'react'
-import { Link } from 'react-router-dom'
-import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
-import { format } from 'date-fns'
-import api from '../utils/api'
-import { formatDuration, formatDistance } from '../utils/format'
-import RouteMiniMap from '../components/ui/RouteMiniMap'
-
-function formatSegmentDist(m) {
-  if (m == null) return '--'
-  return m >= 1000 ? `${(m / 1000).toFixed(2)} km` : `${Math.round(m)} m`
-}
-
-function SegmentRow({ seg, routeId, routePolyline, sportType }) {
-  const [expanded, setExpanded] = useState(false)
-  const queryClient = useQueryClient()
-
-  const { data: times, isLoading: timesLoading } = useQuery({
-    queryKey: ['segment-times', routeId, seg.id],
-    queryFn: () => api.get(`/routes/${routeId}/segments/${seg.id}/times`).then(r => r.data),
-  })
-
-  const deleteMut = useMutation({
-    mutationFn: () => api.delete(`/routes/${routeId}/segments/${seg.id}`),
-    onSuccess: () => queryClient.invalidateQueries({ queryKey: ['segments', routeId] }),
-  })
-
-  const bestTime = times?.length ? Math.min(...times.map(t => t.duration_s)) : null
-  const lastTime = times?.[0]?.duration_s ?? null
-
-  return (
-    <div className="border border-gray-800 rounded-lg overflow-hidden">
-      {/* Main row */}
-      <div className="flex items-center gap-3 p-3">
-        {/* Segment mini-map */}
-        <div className="flex-shrink-0">
-          <RouteMiniMap
-            polyline={routePolyline}
-            sportType={sportType}
-            width={72}
-            height={56}
-            segmentStartM={seg.start_distance_m}
-            segmentEndM={seg.end_distance_m}
-          />
-        </div>
-
-        <div className="flex-1 min-w-0">
-          <div className="flex items-center gap-2 flex-wrap">
-            <span className="text-sm font-medium text-white truncate">{seg.name}</span>
-            {seg.auto_generated && (
-              <span className="text-xs px-1.5 py-0.5 rounded bg-gray-800 text-gray-500">
-                {seg.auto_generated_type || 'auto'}
-              </span>
-            )}
-          </div>
-          <p className="text-xs text-gray-500 mt-0.5">
-            {formatSegmentDist(seg.start_distance_m)} – {formatSegmentDist(seg.end_distance_m)}
-            <span className="ml-2 text-gray-600">({formatSegmentDist(seg.end_distance_m - seg.start_distance_m)})</span>
-          </p>
-          {/* Times preview row */}
-          {!timesLoading && (
-            <div className="flex items-center gap-3 mt-1">
-              {bestTime && (
-                <span className="text-xs font-mono text-yellow-400">
-                  Best {formatDuration(bestTime)}
-                </span>
-              )}
-              {lastTime && lastTime !== bestTime && (
-                <span className="text-xs font-mono text-gray-400">
-                  Last {formatDuration(lastTime)}
-                </span>
-              )}
-              {times?.length > 0 && (
-                <span className="text-xs text-gray-600">
-                  {times.length} run{times.length !== 1 ? 's' : ''}
-                </span>
-              )}
-              {times?.length === 0 && (
-                <span className="text-xs text-gray-600">No times yet</span>
-              )}
-            </div>
-          )}
-          {timesLoading && <p className="text-xs text-gray-600 mt-1">Loading times…</p>}
-        </div>
-
-        <div className="flex items-center gap-2 flex-shrink-0">
-          {times?.length > 0 && (
-            <button
-              onClick={() => setExpanded(v => !v)}
-              className="text-xs text-blue-400 hover:text-blue-300 transition-colors px-2 py-1 rounded border border-blue-500/30 hover:border-blue-400/50"
-            >
-              {expanded ? 'Hide' : 'All'}
-            </button>
-          )}
-          <button
-            onClick={() => deleteMut.mutate()}
-            disabled={deleteMut.isPending}
-            className="text-xs text-gray-600 hover:text-red-400 transition-colors"
-            title="Delete segment"
-          >
-            ✕
-          </button>
-        </div>
-      </div>
-
-      {/* Expanded times list */}
-      {expanded && times?.length > 0 && (
-        <div className="border-t border-gray-800 px-3 pb-3 pt-2 space-y-1">
-          {times.map((t, i) => (
-            <div key={t.activity_id} className="flex items-center gap-3 text-xs">
-              <span className={`font-mono font-semibold w-14 ${t.duration_s === bestTime ? 'text-yellow-400' : 'text-gray-300'}`}>
-                {formatDuration(t.duration_s)}
-              </span>
-              <Link to={`/activities/${t.activity_id}`} className="text-gray-500 hover:text-blue-400 transition-colors truncate">
-                {t.name}
-              </Link>
-              <span className="text-gray-700 flex-shrink-0">{format(new Date(t.date), 'd MMM yyyy')}</span>
-            </div>
-          ))}
-        </div>
-      )}
-    </div>
-  )
-}
-
-function NewSegmentForm({ routeId, onCreated }) {
-  const queryClient = useQueryClient()
-  const [name, setName] = useState('')
-  const [startKm, setStartKm] = useState('')
-  const [endKm, setEndKm] = useState('')
-  const [open, setOpen] = useState(false)
-
-  const mut = useMutation({
-    mutationFn: (data) => api.post(`/routes/${routeId}/segments`, data).then(r => r.data),
-    onSuccess: () => {
-      queryClient.invalidateQueries({ queryKey: ['segments', routeId] })
-      setName(''); setStartKm(''); setEndKm(''); setOpen(false)
-      if (onCreated) onCreated()
-    },
-  })
-
-  if (!open) {
-    return (
-      <button
-        onClick={() => setOpen(true)}
-        className="w-full text-left text-xs text-blue-400 hover:text-blue-300 border border-dashed border-blue-500/30 hover:border-blue-400/50 rounded-lg px-3 py-2 transition-colors"
-      >
-        + Add segment manually
-      </button>
-    )
-  }
-
-  const handleSubmit = (e) => {
-    e.preventDefault()
-    const start = parseFloat(startKm) * 1000
-    const end = parseFloat(endKm) * 1000
-    if (!name || isNaN(start) || isNaN(end) || end <= start) return
-    mut.mutate({ name, start_distance_m: start, end_distance_m: end })
-  }
-
-  return (
-    <form onSubmit={handleSubmit} className="border border-gray-700 rounded-lg p-3 space-y-2">
-      <p className="text-xs text-gray-400 font-medium">New segment</p>
-      <input
-        type="text" placeholder="Name (e.g. The big hill)"
-        value={name} onChange={e => setName(e.target.value)}
-        className="w-full bg-gray-800 border border-gray-700 text-white text-sm rounded px-3 py-1.5 focus:outline-none focus:border-blue-500"
-        required
-      />
-      <div className="flex gap-2">
-        <input
-          type="number" placeholder="Start (km)" step="0.01" min="0"
-          value={startKm} onChange={e => setStartKm(e.target.value)}
-          className="flex-1 bg-gray-800 border border-gray-700 text-white text-sm rounded px-3 py-1.5 focus:outline-none focus:border-blue-500"
-          required
-        />
-        <input
-          type="number" placeholder="End (km)" step="0.01" min="0"
-          value={endKm} onChange={e => setEndKm(e.target.value)}
-          className="flex-1 bg-gray-800 border border-gray-700 text-white text-sm rounded px-3 py-1.5 focus:outline-none focus:border-blue-500"
-          required
-        />
-      </div>
-      <div className="flex gap-2">
-        <button type="submit" disabled={mut.isPending}
-          className="flex-1 bg-blue-600 hover:bg-blue-700 disabled:opacity-50 text-white text-sm py-1.5 rounded transition-colors">
-          {mut.isPending ? 'Saving…' : 'Save'}
-        </button>
-        <button type="button" onClick={() => setOpen(false)}
-          className="px-4 text-sm text-gray-500 hover:text-gray-300 transition-colors">
-          Cancel
-        </button>
-      </div>
-    </form>
-  )
-}
-
-export default function SegmentsPage() {
-  const [selectedRouteId, setSelectedRouteId] = useState(null)
-  const [autoGenLoading, setAutoGenLoading] = useState(null)
-  const [hillGradient, setHillGradient] = useState(5)
-  const queryClient = useQueryClient()
-
-  const { data: routes } = useQuery({
-    queryKey: ['routes'],
-    queryFn: () => api.get('/routes/').then(r => r.data),
-  })
-
-  const selectedRoute = routes?.find(r => r.id === selectedRouteId)
-
-  const { data: segments, isLoading: segsLoading } = useQuery({
-    queryKey: ['segments', selectedRouteId],
-    queryFn: () => api.get(`/routes/${selectedRouteId}/segments`).then(r => r.data),
-    enabled: !!selectedRouteId,
-  })
-
-  const autoGenMut = useMutation({
-    mutationFn: ({ type, opts }) =>
-      api.post(`/routes/${selectedRouteId}/segments/auto`, { type, ...opts }).then(r => r.data),
-    onSuccess: () => {
-      queryClient.invalidateQueries({ queryKey: ['segments', selectedRouteId] })
-      setAutoGenLoading(null)
-    },
-    onError: (err) => {
-      alert(err?.response?.data?.detail || 'Auto-generate failed')
-      setAutoGenLoading(null)
-    },
-  })
-
-  const handleAutoGen = (type, opts = {}) => {
-    setAutoGenLoading(type)
-    autoGenMut.mutate({ type, opts })
-  }
-
-  return (
-    <div className="p-6 space-y-6">
-      <div className="flex items-center justify-between">
-        <h1 className="text-2xl font-bold text-white">Segments</h1>
-      </div>
-
-      {/* Route tile grid */}
-      {!routes?.length ? (
-        <div className="bg-gray-900 rounded-xl border border-gray-800 p-6">
-          <p className="text-sm text-gray-600">No named routes yet. <Link to="/routes" className="text-blue-400 hover:underline">Create one on the Routes page.</Link></p>
-        </div>
-      ) : (
-        <div className="grid grid-cols-2 sm:grid-cols-3 lg:grid-cols-4 gap-3">
-          {routes.map(r => (
-            <button
-              key={r.id}
-              onClick={() => setSelectedRouteId(r.id === selectedRouteId ? null : r.id)}
-              className={`text-left rounded-xl border p-2 transition-colors ${
-                selectedRouteId === r.id
-                  ? 'border-blue-500 bg-blue-900/20'
-                  : 'border-gray-800 bg-gray-900 hover:border-gray-600'
-              }`}
-            >
-              <RouteMiniMap
-                polyline={r.reference_polyline}
-                sportType={r.sport_type}
-                width="100%"
-                height={80}
-              />
-              <p className="text-xs font-medium text-white mt-2 truncate">{r.name}</p>
-              <div className="flex items-center justify-between mt-0.5">
-                {r.distance_m && (
-                  <p className="text-xs text-gray-500">{(r.distance_m / 1000).toFixed(1)} km</p>
-                )}
-                {r.activity_count > 0 && (
-                  <p className="text-xs text-gray-500">{r.activity_count} run{r.activity_count !== 1 ? 's' : ''}</p>
-                )}
-              </div>
-            </button>
-          ))}
-        </div>
-      )}
-
-      {selectedRoute && (
-        <div className="space-y-4">
-          {/* Route info */}
-          <div className="flex items-center gap-3">
-            <div>
-              <h2 className="text-lg font-semibold text-white">{selectedRoute.name}</h2>
-              <p className="text-xs text-gray-500">
-                {selectedRoute.sport_type && <span className="capitalize">{selectedRoute.sport_type}</span>}
-                {selectedRoute.distance_m && <span> · {formatDistance(selectedRoute.distance_m)}</span>}
-                {selectedRoute.activity_count > 0 && <span> · {selectedRoute.activity_count} runs</span>}
-                {selectedRoute.auto_detected && <span className="ml-1 text-gray-600">(auto-detected)</span>}
-              </p>
-            </div>
-          </div>
-
-          {/* Auto-generate controls */}
-          <div className="bg-gray-900 rounded-xl border border-gray-800 p-4 space-y-3">
-            <p className="text-xs font-medium text-gray-400">Auto-generate segments</p>
-            <div className="flex flex-wrap gap-2 items-center">
-              <button
-                onClick={() => handleAutoGen('1km')}
-                disabled={autoGenLoading === '1km'}
-                className="text-sm px-3 py-1.5 rounded-lg bg-blue-600/20 text-blue-300 border border-blue-500/30 hover:bg-blue-600/30 disabled:opacity-50 transition-colors"
-              >
-                {autoGenLoading === '1km' ? 'Generating…' : '📏 1 km splits'}
-              </button>
-              <button
-                onClick={() => handleAutoGen('turns')}
-                disabled={autoGenLoading === 'turns'}
-                className="text-sm px-3 py-1.5 rounded-lg bg-purple-600/20 text-purple-300 border border-purple-500/30 hover:bg-purple-600/30 disabled:opacity-50 transition-colors"
-              >
-                {autoGenLoading === 'turns' ? 'Generating…' : '↩️ Detect turns'}
-              </button>
-              <div className="flex items-center gap-2">
-                <button
-                  onClick={() => handleAutoGen('hills', { gradient_pct: hillGradient })}
-                  disabled={autoGenLoading === 'hills'}
-                  className="text-sm px-3 py-1.5 rounded-lg bg-green-600/20 text-green-300 border border-green-500/30 hover:bg-green-600/30 disabled:opacity-50 transition-colors"
-                >
-                  {autoGenLoading === 'hills' ? 'Generating…' : '⛰️ Detect hills'}
-                </button>
-                <div className="flex items-center gap-1">
-                  <span className="text-xs text-gray-500">≥</span>
-                  <input
-                    type="number" min="1" max="30" step="1"
-                    value={hillGradient}
-                    onChange={e => setHillGradient(parseInt(e.target.value) || 5)}
-                    className="w-12 bg-gray-800 border border-gray-700 text-white text-xs rounded px-2 py-1 text-center focus:outline-none focus:border-blue-500"
-                  />
-                  <span className="text-xs text-gray-500">%</span>
-                </div>
-              </div>
-            </div>
-            <p className="text-xs text-gray-600">Each auto-generate type (splits, turns, hills) replaces only its own previous segments. Manual segments are always kept.</p>
-          </div>
-
-          {/* Segments list */}
-          <div className="bg-gray-900 rounded-xl border border-gray-800 p-4 space-y-3">
-            <div className="flex items-center justify-between">
-              <h3 className="text-sm font-medium text-gray-300">Segments</h3>
-              {segments?.length > 0 && (
-                <span className="text-xs text-gray-600">{segments.length} segment{segments.length !== 1 ? 's' : ''}</span>
-              )}
-            </div>
-
-            {segsLoading && <p className="text-sm text-gray-600">Loading…</p>}
-
-            {!segsLoading && !segments?.length && (
-              <p className="text-sm text-gray-600">No segments yet. Use auto-generate above or add one manually.</p>
-            )}
-
-            {segments?.map(seg => (
-              <SegmentRow
-                key={seg.id}
-                seg={seg}
-                routeId={selectedRouteId}
-                routePolyline={selectedRoute.reference_polyline}
-                sportType={selectedRoute.sport_type}
-              />
-            ))}
-
-            <NewSegmentForm routeId={selectedRouteId} />
-          </div>
-        </div>
-      )}
-    </div>
-  )
-}