Cumberland, MD · separated · mixed

Great Allegheny Passage (Maryland)

20.6 mi Out-and-back 1565 ft gain

The Allegheny Highlands Trail of Maryland (AHTM) is a 20.47-mile (32.94 km) long rail trail between the C&O Canal in Cumberland and the Mason–Dixon line, where it meets the Allegheny Highlands Trail of Pennsylvania. It forms part of the Pittsburgh–Washington, DC Great Allegheny Passage.

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.
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

81°F

Cloudy
Wind

12 mph

W
Rain

81%

Next 24h: 0.08"
Humidity

68%

Surface & daylight

Pavement

wet

mixed surface
Sunrise

6:10 AM
Sunset

8:32 PM

402 min remaining

Best time today

8 PM looks best — 75°F · 10 mph NW wind · mostly clear.

2 PM

80°

Showers And Thunderstorms

9 mph W

—

3 PM

82°

Showers And Thunderstorms Likely

9 mph W

—

4 PM

83°

Chance Showers And Thunderstorms

9 mph NW

—

5 PM

83°

Chance Showers And Thunderstorms

9 mph NW

—

6 PM

81°

Slight Chance Showers And Thunderstorms

10 mph NW

—

7 PM

78°

Slight Chance Showers And Thunderstorms

10 mph NW

—

8 PM Best

75°

Mostly Clear

10 mph NW

Wind on this route

12 mph crosswind — expect a 12 mph headwind on the return.

Currently 12 mph from the SSW (210°). Relative to this ride's overall bearing, a crosswind.

Leg 1 Bearing 319° · crosswind 1.7 mi
Leg 2 Bearing 356° · quartering tailwind 1.5 mi
Leg 3 Bearing 245° · quartering headwind 1.4 mi
Leg 4 Bearing 315° · crosswind 1.6 mi
Leg 5 Bearing 237° · headwind 1.5 mi
Leg 6 Bearing 303° · crosswind 1.2 mi
Leg 7 Bearing 218° · headwind 1.4 mi
Leg 8 Bearing 239° · headwind 1.8 mi

Elevation profile

3034 ft gain 1469 ft loss Max 2241' Min 607' 15.6 mi sampled

Score breakdown

81°F air Within comfort range, outside ideal

-3

−

12 mph wind Noticeable — pacing will shift with the wind.

-2

−

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: 20.6 mi one-way (double for round-trip)
Elevation gain: 1565 ft
Surface: mixed
Shape: Out-and-back
Traffic exposure: separated
Activities: road cycling · e bike
Start: 39.6493, -78.7630
City hub: Cumberland, MD
OSM: relation 1369277

Description sourced from the Wikipedia summary.