Washington, DC · mostly separated · mixed

9-11 Trail (District of Columbia)

4.3 mi Out-and-back 39 ft gain

4.3-mile mixed route with 39 ft of elevation gain, signed as part of the U.S. Bicycle Route System, route reference “9-11”, mostly separated from motor traffic.

Live · updated Jul 28, 1:51 PM ET

Today's verdict

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.
54 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.

0 /100

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0 Road

0 E-bike

Best for road cycling today

Route map

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.

Atmosphere

Air temp

84°F

Partly Cloudy
Wind

54 mph

SW
Rain

90%

Next 24h: 0.85"
Humidity

70%

Surface & daylight

Pavement

wet

mixed surface
Sunrise

6:05 AM
Sunset

8:23 PM

394 min remaining

Best time today

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

Wind on this route

54 mph crosswind — expect a 54 mph headwind on the return.

Currently 54 mph from the S (170°). Relative to this ride's overall bearing, a crosswind.

Leg 1 Bearing 237° · quartering headwind 0.4 mi
Leg 2 Bearing 245° · crosswind 0.3 mi
Leg 3 Bearing 269° · crosswind 0.4 mi
Leg 4 Bearing 292° · quartering tailwind 0.3 mi
Leg 5 Bearing 270° · crosswind 0.4 mi
Leg 6 Bearing 270° · crosswind 0.4 mi
Leg 7 Bearing 215° · quartering headwind 0.3 mi
Leg 8 Bearing 256° · crosswind 0.4 mi

Elevation profile

76 ft gain 148 ft loss Max 69' Min -3' 3.7 mi sampled

Score breakdown

84°F air Within comfort range, outside ideal

-3

−

54 mph wind Gusty and hazardous on exposed bridges and overpasses.

-36

−

Strong crosswind 54 mph crosswind — expect a 54 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

About this route

Distance: 4.3 mi one-way (double for round-trip)
Elevation gain: 39 ft
Surface: mixed
Shape: Out-and-back
Traffic exposure: mostly separated
Activities: road cycling · e bike
Cycle network: NCN · route 9-11
Start: 38.8951, -77.0090
City hub: Washington, DC
OSM: relation 13631683

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