Looking for the best mountain biking routes in Seneca Regional Park? Then browse our collection of mtb rides around this beautiful natural park in Fairfax County below — and discover more of on your next visit.

Last updated: October 10, 2025

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1. Muddy Branch Stream Trail loop from Riverwood

21.2km

01:50

210m

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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Easy

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2. Muddy Branch Stream Trail – Pennyfield Lock loop from Scotland

47.0km

03:47

390m

Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Intermediate

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3. Riley’s lock – Black Rock Mill loop from Broad Run Farms

27.5km

02:17

200m

Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Intermediate

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4. Riley’s lock – Pennyfield Lock loop from Broad Run Farms

32.8km

02:38

70m

Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Intermediate

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5. Riley’s lock – Lockhouse 25 loop from Broad Run Farms

26.4km

02:06

20m

Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Intermediate

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The best MTB trails in Seneca Regional Park

1. Muddy Branch Stream Trail loop from Riverwood

2. Muddy Branch Stream Trail – Pennyfield Lock loop from Scotland

3. Riley’s lock – Black Rock Mill loop from Broad Run Farms

4. Riley’s lock – Pennyfield Lock loop from Broad Run Farms

5. Riley’s lock – Lockhouse 25 loop from Broad Run Farms

Most popular routes in Seneca Regional Park

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