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Bike touring routes & trails

United States

Maryland

Montgomery County

Black Rock Mill – John Poole House loop from Planetary Radio Emissions Discovery Site

Routes

Bike touring routes & trails

United States

Maryland

Montgomery County

Black Rock Mill – John Poole House loop from Planetary Radio Emissions Discovery Site

Hard

3.4

(3)

riders

Black Rock Mill – John Poole House loop from Planetary Radio Emissions Discovery Site

03:17

53.6km

460m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: May 18, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Seneca Creek State Park

Hoyles Mill Conservation Park

South Germantown Recreational Park

Little Seneca Greenway Stream Valley Park

McKee-Beshers Wildlife Management Area

Waypoints

Start point

Parking

Get Directions

1.97 km

Seneca Schoolhouse

Highlight • Historical Site

Old Seneca Schoolhouse is a small 1800s school building tucked near the trails in Seneca Creek. It’s a cool little stop if you’re riding or hiking nearby—feels like stepping back …

Tip by

8.28 km

Rustic Country Road

Highlight • Cycleway

Berryville Rd in Darnestown is a lovely rustic country road at the edge of Montgomery County's Agricultural Reserve. Always worth a ride and offering some stunning views.

Tip by

11.5 km

Black Rock Mill

Highlight • Historical Site

Just the walls remain of the 1815 Black Rock saw- and gristmill in Seneca Creek State Park. The structure was stabilized and representations of mill machinery were added in 1980.

Tip by

12.0 km

Autumn Forest in Seneca Creek State Park

Highlight • Forest

Seneca Creek State Park is a beautiful place to ride, especially during the fall when the landscape comes alive with color. Film fans might recognize it as a filming location for 'The Blair Witch Project'. Maybe don't visit at night...?

Tip by

14.6 km

South Germantown Recreational Park

Highlight • Rest Area

South Germantown Recreational Park is a very busy Montgomery Park. It is a large park that offers a variety of activities including hiking, biking, archery, miniature golf, swimming, soccer, picnicking, and adventure play along with many more.

Tip by

20.1 km

Scenic view across the Montgomery County Agriculture Reserve

Highlight • Viewpoint

A lovely spot on Old Bucklodge lane with rustic country site impressions.

Tip by

33.9 km

Darby Store Cultural Park

Nature Reserve

42.7 km

John Poole House

Highlight • Historical Site

This is the oldest building in Poolesville! The wooden cabin was built in 1793 and was a trading post for the surrounding farms, plantations and travelling merchants. From 1810, it …

Tip by

50.7 km

Hughes Hollow Bird Sanctuary

Highlight • Natural Monument

The Hughes Hollow swamps at the edge of the Potomac are a unique bird sanctuary where salt- and freshwater birds congregate, and a precious rest place for migratory birds. Overall, …

Tip by

53.6 km

End point

Parking

Way Types & Surfaces

Way Types

34.0 km

16.3 km

2.99 km

339 m

< 100 m

Surfaces

33.4 km

19.7 km

339 m

178 m

Elevation

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

Highest point (170 m)

Lowest point (60 m)

Weather

Today

Thursday 21 May

21°C

13°C

83 %

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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Black Rock Mill – John Poole House loop from Planetary Radio Emissions Discovery Site

Seneca Schoolhouse

Rustic Country Road

Black Rock Mill

Autumn Forest in Seneca Creek State Park

South Germantown Recreational Park

Scenic view across the Montgomery County Agriculture Reserve

John Poole House

Hughes Hollow Bird Sanctuary

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