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Mountain biking trails

Pennyfield Lock – Swains Lock loop from Rockville

Routes

Mountain biking trails

Pennyfield Lock – Swains Lock loop from Rockville

Moderate

4.9

(1852)

16,350

riders

Pennyfield Lock – Swains Lock loop from Rockville

04:46

64.0km

440m

Mountain biking

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 20, 2026

Tips

Includes a segment in which cycling is not permitted

After 0 m for 203 m

Waypoints

Start point

Train Station

Get Directions

24.8 km

Bridge over Muddy Branch near Riley’s Lock

Highlight • Bridge

This is a very picturesque area, with the bridge, the creek, and the house up the hill beyond the field.

Tip by

25.7 km

Pennyfield Lock

Highlight • Monument

Lock 22, aka Pennyfield Lock, was built between 1829 and 1831, and the name came from the misspelling of the Pennifield family name. It has been restored and offers overnight stays to recreate the rustic feeling from that period.

Tip by

30.5 km

Swains Lock

Highlight • Historical Site

These are hard to come by along the C&O canal and usually hidden. Always nice to know where to get water.

Tip by

34.7 km

Start of the Great Falls Foot Trail

Highlight • Trail

The Great Falls of the Potomac is a place with various rapids and small falls in the Potomac. The place marked here may only be entered on foot. Bicycles and dogs 😜 must stay outside.

Translated by Google •

Tip by

35.0 km

Viewpoint

36.7 km

Widewater

Lake

43.6 km

Chesapeake and Ohio Canal

Lake

47.4 km

Cabin John Trail

Highlight (Segment) • Trail

This stretch of trail runs through the woods away from the busy road. This is a small part of the trail that runs through the length of Cabin John Stream Valley Park.

Tip by

53.1 km

Wooden bridge and Arch Eagle Scout project

Highlight • Bridge

53.7 km

Locust Grove Nature Center

Highlight • Rest Area

This park has something for every kind of outdoor enthusiast, from athletic fields and ice skating to picnic tables and a nature center for the kids. With over 5 miles …

Tip by

56.4 km

Cabin John Trail (northern part)

Highlight (Segment) • Trail

This well maintained length of singletrack is a lovely to ride. Its well maintained and has plenty of shade for those summer days. The trail runs alongside the creek, which you should be able to see in places.

Tip by

64.0 km

End point

Train Station

Way Types & Surfaces

Way Types

36.6 km

18.6 km

3.87 km

2.57 km

2.25 km

115 m

< 100 m

Surfaces

27.9 km

16.7 km

10.3 km

6.59 km

1.88 km

766 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (140 m)

Lowest point (20 m)

Weather

Today

Wednesday 20 May

31°C

19°C

70 %

Additional weather tips

Max wind speed: 15.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Pennyfield Lock – Swains Lock loop from Rockville

Bridge over Muddy Branch near Riley’s Lock

Pennyfield Lock

Swains Lock

Start of the Great Falls Foot Trail

Cabin John Trail

Wooden bridge and Arch Eagle Scout project

Locust Grove Nature Center

Cabin John Trail (northern part)

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