Bethesda, MD · mixed · mixed

Georgetown Branch Trail Detour

1.7 mi Out-and-back 98 ft gain

1.7-mile mixed route with 98 ft of elevation gain, signed as part of the regional cycle network, route reference “GBTD”.

Live · updated Nov 7, 3:37 AM ET

Today's verdict

Marginal conditions — get the road bike out if you have to.

41 mph wind — gusty and hazardous on exposed bridges and overpasses.
56°F air — right in road cycling's sweet spot

40 /100

40 Road

54 E-bike

Best for e-bike riding 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

56°F

Cloudy
Wind

41 mph

NW
Rain

1%

Next 24h: 0.00"
Air quality

AQI 18

O3 · Good
Humidity

58%

Surface & daylight

Pavement

dry

mixed surface
Sunrise

6:42 AM
Sunset

5:01 PM

805 min remaining

Best time today

9 AM looks best — 50°F · 13 mph NW wind · sunny. 10 AM is a close second (78/100).

4 AM

47°

Mostly Cloudy

10 mph NW

5 AM

45°

Partly Cloudy

9 mph NW

6 AM

44°

Mostly Sunny

8 mph NW

7 AM

43°

Sunny

9 mph NW

8 AM

45°

Sunny

10 mph NW

9 AM Best

50°

Sunny

13 mph NW

10 AM

52°

Mostly Sunny

13 mph NW

11 AM

54°

Mostly Sunny

12 mph NW

12 PM

55°

Mostly Sunny

13 mph NW

1 PM

57°

Mostly Sunny

13 mph W

2 PM

57°

Mostly Sunny

15 mph W

3 PM

58°

Mostly Sunny

16 mph W

4 PM

56°

Mostly Sunny

16 mph NW

Wind on this route

41 mph tailwind outbound — expect a 41 mph headwind on the return.

Currently 41 mph from the NW (310°). Relative to this ride's overall bearing, a quartering tailwind.

Leg 1 Bearing 234° · crosswind 0.1 mi
Leg 2 Bearing 249° · quartering headwind 0.1 mi
Leg 3 Bearing 158° · tailwind 0.1 mi
Leg 4 Bearing 173° · quartering tailwind 0.1 mi
Leg 5 Bearing 177° · quartering tailwind 0.2 mi
Leg 6 Bearing 180° · quartering tailwind 0.1 mi
Leg 7 Bearing 172° · quartering tailwind 0.1 mi
Leg 8 Bearing 179° · quartering tailwind 0.1 mi

Elevation profile

115 ft gain 121 ft loss Max 387' Min 302' 1.5 mi sampled

Score breakdown

56°F air Right in road cycling's sweet spot

+10

−

Exposed + strong wind mixed traffic in 20+ mph wind — gusts near passing vehicles are the hazard.

-4

−

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

-36

Quartering tailwind 41 mph tailwind outbound — expect a 41 mph headwind on the return.

Pavement: dry Clean dry pavement — maximum grip.

AQI 18 Clean air

Advisories & nearby alerts

NWSTest Message

About this route

Distance: 1.7 mi one-way (double for round-trip)
Elevation gain: 98 ft
Surface: mixed
Shape: Out-and-back
Traffic exposure: mixed
Activities: road cycling · e bike
Cycle network: RCN · route GBTD
Start: 38.9985, -77.0888
City hub: Bethesda, MD
OSM: relation 8040043

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