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 12, 11:08 AM 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.
21 mph wind — noticeable — pacing will shift with the wind.

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

78°F

Mostly Cloudy
Wind

21 mph

E
Rain

31%

Next 24h: 0.00"
Humidity

71%

Surface & daylight

Pavement

wet

mixed surface
Sunrise

5:57 AM
Sunset

8:43 PM

575 min remaining

Best time today

12 PM looks best — 79°F · 3 mph E wind · mostly cloudy. 1 PM is a close second (25/100).

12 PM Best

79°

Mostly Cloudy

3 mph E

1 PM

81°

Mostly Cloudy

5 mph E

2 PM

83°

Slight Chance Showers And Thunderstorms

5 mph SE

—

3 PM

83°

Slight Chance Showers And Thunderstorms

5 mph E

—

4 PM

82°

Slight Chance Showers And Thunderstorms

5 mph E

—

5 PM

81°

Chance Showers And Thunderstorms

5 mph SE

—

6 PM

80°

Chance Showers And Thunderstorms

5 mph E

—

7 PM

78°

Slight Chance Showers And Thunderstorms

5 mph SE

—

8 PM

77°

Slight Chance Rain Showers

3 mph SE

Wind on this route

21 mph tailwind outbound — expect a 21 mph headwind on the return.

Currently 21 mph from the ENE (60°). Relative to this ride's overall bearing, a quartering tailwind.

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

Elevation profile

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

Score breakdown

78°F air Within comfort range, outside ideal

-3

−

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

-6

Quartering tailwind 21 mph tailwind outbound — expect a 21 mph headwind on the return.

−

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.