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 Aug 11, 1:47 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.
Pavement: wet — wet during the likely ride window — reduced braking, road spray, limited visibility to drivers.
25 mph wind — strong — plan for slow outbound if wind is against you.
86°F air — above road cycling's comfort zone (28–85°f). heat acclimation required.

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

86°F

Clear
Wind

25 mph

W
Rain

19%

Next 24h: 0.22"
Humidity

55%

Surface & daylight

Pavement

wet

mixed surface
Sunrise

6:17 AM
Sunset

8:08 PM

382 min remaining

Best time today

4 PM looks best — 88°F · 7 mph W wind · partly sunny.

2 PM

87°

Slight Chance Showers And Thunderstorms

6 mph W

—

3 PM

88°

Slight Chance Showers And Thunderstorms

6 mph W

—

4 PM Best

88°

Partly Sunny

7 mph W

5 PM

88°

Slight Chance Showers And Thunderstorms

7 mph W

—

6 PM

86°

Slight Chance Showers And Thunderstorms

6 mph NW

—

7 PM

85°

Chance Showers And Thunderstorms

7 mph W

—

Wind on this route

25 mph headwind outbound — expect a 25 mph headwind on the return.

Currently 25 mph from the W (280°). Relative to this ride's overall bearing, a quartering headwind.

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

Elevation profile

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

Score breakdown

−

86°F air Above road cycling's comfort zone (28–85°F). Heat acclimation required.

-2

−

25 mph wind Strong — plan for slow outbound if wind is against you.

-18

−

Quartering headwind 25 mph headwind outbound — expect a 25 mph headwind on the return.

-4

−

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.