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Routes
Mountain biking trails
United States
Virginia
Fairfax County

Bull Run Occoquan Trail

Hard

2.8

(5)

91

riders

Bull Run Occoquan Trail

01:55

21.3km

260m

Mountain biking

Embark on a challenging mountain biking adventure along the Bull Run Occoquan Trail, a difficult 13.2-mile (21.3 km) route that features a significant 852 feet (260 metres) of elevation gain. You can expect to complete this ride in about 1 hour and 55 minutes, navigating through scenic woodlands that follow…

Last updated: April 23, 2026

Waypoints

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Start point

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1

70 m

Trailhead – Bull Run Occoquan Trail

Highlight • Trail

This out-and-back trail will get your heart pumping due to several exposed and challenging segments. If you are looking for a physically demanding workout on your bike, then this is your trail.

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21.3 km

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Way Types & Surfaces

Way Types

20.9 km

245 m

147 m

Surfaces

20.7 km

322 m

245 m

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Elevation

Elevation

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Thursday 28 May

27°C

17°C

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to access the Bull Run Occoquan Trail for mountain biking?

The primary access point for mountain biking on the Bull Run Occoquan Trail is at Fountainhead Regional Park. You can find parking there. The trail research also mentions other strategically placed parking areas along the 19.6-mile route, allowing you to complete it in sections.

What is the terrain like for mountain biking on this trail?

The trail offers a challenging natural surface with both singletrack and doubletrack sections. Mountain bikers should expect a physically demanding ride featuring numerous sharp climbs and fast descents. The terrain includes rocks, roots, logs, loose sand, ledges, and narrow bridges. Water bars are common, and the trail can be muddy, especially after rain, with several stream crossings. Advanced technical features like unavoidable obstacles and rock gardens are present.

Is the Bull Run Occoquan Trail suitable for beginner mountain bikers?

No, the Bull Run Occoquan Trail is generally not suitable for beginners. It is officially rated as 'Blue' difficulty (intermediate) and 'Hard' for its physical demands. Some portions may even require riders to push their bikes due to advanced technical features and steep sections.

What is the best time of year to mountain bike the Bull Run Occoquan Trail?

Spring and fall generally offer the most pleasant conditions for mountain biking on the trail, with cooler temperatures and vibrant foliage. However, be aware that the trail can become quite muddy after rain, so checking recent weather conditions is advisable. Summer can be hot and humid, while winter rides depend on snow and ice conditions.

Is the Bull Run Occoquan Trail dog-friendly?

The trail is generally dog-friendly, but dogs must be kept on a leash at all times. As it's a mixed-use trail, ensuring your dog is under control helps maintain a safe and enjoyable experience for all users, including hikers and equestrians.

Are there any permits or fees required to use the Bull Run Occoquan Trail, especially within Fountainhead Regional Park?

Accessing the trail, particularly within Fountainhead Regional Park, may involve entrance fees. It's recommended to check the official website for Fountainhead Regional Park or the regional park authority for the most current information on fees, permits, or specific regulations before your visit.

What kind of scenery and wildlife can I expect to see along the route?

Riders will enjoy scenic woodlands, meandering along Bull Run and the Occoquan Reservoir, offering delightful river views. The trail passes through diverse forests with mature hemlock, beech, pine, oak, hickory, maple, dogwood, and sycamore trees. The area is a protected sanctuary teeming with wildlife, providing an immersive natural experience.

Are there any historical points of interest on the trail?

Yes, the Bull Run Occoquan Trail is rich in history, having played a significant role during the Revolutionary and Civil Wars. You may encounter historical markers and even the remnants of a makeshift Civil War fort along the way, adding a unique historical dimension to your ride.

Does the trail intersect with other well-known paths?

Yes, the route primarily follows the Bull Run Occoquan Trail itself, but it also passes through sections of other trails such as the Green Loop, White Loop, Red Horseshoe Trail, Yellow Trail, Blue Equestrian Trail, Enslaved Burial Ground Trail, and Nature Trail.

What should I know about mountain biking etiquette on this mixed-use trail?

Mountain biking is specifically permitted only on the southern trail section between Fountainhead and Bull Run Marina. It is crucial to remember that this is a mixed-use trail, so cyclists must yield to hikers and equestrians to ensure a safe and respectful experience for everyone.

Is the Bull Run Occoquan Trail a loop or an out-and-back route for mountain biking?

The Bull Run Occoquan Trail is primarily an out-and-back route, stretching approximately 19.6 miles in one direction. However, it can be conveniently completed in sections due to strategically placed parking areas, allowing for shorter out-and-back rides or point-to-point adventures if you arrange a shuttle.

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