Southern Maryland Potomac Heritage Trail On-Road Bicycling Route

48.2 mi Out-and-back 161 ft gain

48.2-mile mixed route with 161 ft of elevation gain, route reference “PHT”, routed on public roads.

Thunderstorms in the forecast — lightning and cyclists are a bad combination.

  • Thunderstorms — lightning and cyclists do not mix — get off the road before they arrive.
  • 46 mph wind — gusty and hazardous on exposed bridges and overpasses.
  • Pavement: wet — wet during the likely ride window — reduced braking, road spray, limited visibility to drivers.
  • Exposed + wet + windy — on road traffic in wet windy conditions — visibility and handling margin drop together.
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0 Road
0 E-bike

Best for road cycling today

Orange marker is the start. Click the map to enable scroll-zoom — the polyline is approximate; use Ride with GPS or Komoot for turn-by-turn.

  • Air temp
    85°F
    Mostly Cloudy
  • Wind
    46 mph
    SW
  • Rain
    94%
    Next 24h: 0.50"
  • Humidity
    68%
  • Pavement
    wet
    mixed surface
  • Sunrise
    6:06 AM
  • Sunset
    8:22 PM
    392 min remaining

Every remaining hour today is flagged hazardous. Save it for tomorrow.

46 mph crosswind — expect a 46 mph headwind on the return.

Currently 46 mph from the S (170°). Relative to this ride's overall bearing, a crosswind.

  1. Leg 1 Bearing 305° · quartering tailwind 2.1 mi
  2. Leg 2 Bearing 3° · tailwind 2.6 mi
  3. Leg 3 Bearing 261° · crosswind 2.1 mi
  4. Leg 4 Bearing 236° · quartering headwind 2.6 mi
  5. Leg 5 Bearing 279° · crosswind 2.6 mi
  6. Leg 6 Bearing 214° · quartering headwind 1.7 mi
  7. Leg 7 Bearing 227° · quartering headwind 2.7 mi
  8. Leg 8 Bearing 139° · quartering headwind 2.1 mi
-50'0'50'100'150'200' 0 mi6 mi12 mi18 mi24 mi30 mi36 mi41 mi
1026 ft gain 1192 ft loss Max 194' Min -7' 41 mi sampled
·
85°F air Within comfort range, outside ideal
-3
Exposed + wet + windy on road traffic in wet windy conditions — visibility and handling margin drop together.
-12
46 mph wind Gusty and hazardous on exposed bridges and overpasses.
-36
Strong crosswind 46 mph crosswind — expect a 46 mph headwind on the return.
-3
Thunderstorms Lightning and cyclists do not mix — get off the road before they arrive.
-45
Pavement: wet Wet during the likely ride window — reduced braking, road spray, limited visibility to drivers.
-32
Distance
48.2 mi one-way (double for round-trip)
Elevation gain
161 ft
Surface
mixed
Shape
Out-and-back
Traffic exposure
on road
Activities
road cycling · e bike
Start
38.4526, -76.9907
OSM
relation 18345436

Description sourced from OpenStreetMap relation tags and member-way geometry.

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