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United States
California
Marin County

Sleepy Hollow

The best MTB trails around Sleepy Hollow

By Fede from komoot

·

Updated May 29, 2026

If you've ever tried to plan mountain biking around Sleepy Hollow, you know how overwhelming the options can be. With so many trails out there, it's tough to figure out which routes are genuinely worth your time and effort, and how to separate the true highlights from the filler. We get it — the last thing you want is to spend your precious riding time on a mediocre trail.

That's where komoot comes in. Our community of local riders has mapped, ridden, and reviewed these routes, giving you a curated shortlist of the best mountain bike trails around Sleepy Hollow. We've done the legwork so you don't have to, promising to save you the guesswork and point you straight to the rides that deliver.

Mountain biking here means diverse landscapes, from challenging singletrack with roots and rocks to more extensive carriage trails and scenic paths along reservoirs. You'll find everything from rolling hills and dense woodlands to stunning waterfront views of the Hudson River. The network offers options for different ability levels, from easier rides to demanding singletrack, ensuring there's something for every rider.

If you're looking for a serious challenge with big rewards, the 680 Trail – Big Rock Ridge loop from Sleepy Hollow is a difficult 21.9 miles (35.3 km) route with significant climbs and expansive views that are truly worth your legs. For a slightly shorter, but still demanding ride, the Hoo-Koo-E-Koo Fire Road Trail – Bon Tempe Dam loop from Fairfax covers 25.9 miles (41.6 km) and is a local favorite. With over 2,700 mountain bikers having explored these trails with komoot, you can trust you're in good company.

If you only do 3 of these routes

  1. 1

    Phoenix Lake – Fish Gulch trail junction loop from Fairfax
  2. 2

    680 Trail – Big Rock Ridge loop from Sleepy Hollow
  3. 3

    Hoo-Koo-E-Koo Fire Road Trail – Bon Tempe Dam 🚵 loop from Fairfax

Compare these routes at a glance

Trail

Distance

Elevation

Difficulty

Phoenix Lake – Fish Gulch trail junction loop from Fairfax

29.8 km

640 m

Moderate

680 Trail – Big Rock Ridge loop from Sleepy Hollow

35.3 km

1,150 m

Hard

Hoo-Koo-E-Koo Fire Road Trail – Bon Tempe Dam 🚵 loop from Fairfax

41.6 km

1,070 m

Hard

Porcupine Trail – Camp Tamarancho Trailhead loop from Woodacre

13.3 km

340 m

Moderate

Marie Dhority Bridge – Fairfax loop from Fairfax

47.4 km

520 m

Moderate

Glen Fire Rd Trailhead 🌳 – Fairfax Falls 🌊 loop from Fairfax

13.7 km

220 m

Easy

Camp Tamarancho Trailhead – B-17 crash site loop from Fairfax

12.6 km

370 m

Hard

Fairfax – Gestalt Haus loop from Fairfax

15.1 km

160 m

Easy

Porcupine Trail loop from Woodacre

7.70 km

240 m

Moderate

Camp Tamarancho Trailhead – Goldman Trail loop from Fairfax

45.7 km

1,230 m

Hard

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1.

Phoenix Lake – Fish Gulch trail junction loop from Fairfax

29.8km

02:38

640m

640m

The Phoenix Lake – Fish Gulch trail junction loop from Fairfax offers a dynamic mountain biking experience, weaving through varied terrain and stunning landscapes. You'll navigate everything from steep fire roads, like the challenging Fish Grade, to flowing singletrack on the Upper Fish Gulch Trail, all while enjoying views of the emerald-blue Phoenix Lake. This moderate 18.5-mile (29.8 km) route, with its 2092 feet (638 metres) of elevation gain, takes about 2 hours and 38 minutes, making it a rewarding ride for those with good fitness.

Starting from Fairfax, this loop requires preparation for its diverse conditions, including some sections that are steep enough to warrant pushing your bike. While specific parking information isn't detailed, arriving early is always a smart move to ensure a smooth start to your ride. Be ready for a mix of shaded paths and open stretches, and consider the time of day for optimal riding conditions.

This trail is strategically located within the Mount Tamalpais Watershed, making the Fish Gulch junction a central point for exploring further. It serves as a gateway to other lakes and the peaks of Mount Tamalpais State Park, offering immense views towards the San Francisco Bay. The Fish Grade Multi Trail is particularly notable for its steep, fun descent to Phoenix Lake, setting it apart from typical Marin County fire roads.

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2.

680 Trail – Big Rock Ridge loop from Sleepy Hollow

35.3km

03:51

1,150m

1,150m

The 680 Trail – Big Rock Ridge loop from Sleepy Hollow is a challenging mountain bike ride that delivers big on views and varied terrain. You'll navigate everything from flowing singletrack on the 680 Trail to incredibly steep fire roads on Big Rock Ridge, where grades can exceed 20%. The reward for your effort is spectacular, with panoramic vistas stretching across the Bay Area, including Mount Tamalpais and the Golden Gate Bridge, especially from the exposed grasslands of Big Rock Ridge.

This difficult 21.9-mile (35.3 km) route involves a substantial 3784 feet (1153 metres) of elevation gain and typically takes around 3 hours and 50 minutes to complete. It's designed for advanced riders with very good fitness. While the 680 Trail itself is relatively easy, the strenuous climbs on Big Rock Ridge mean you should be prepared for a demanding workout. Spring is a great time to visit for wildflowers, though summer fog can add a dramatic touch.

This loop connects the Terra Linda-Sleepy Hollow Divide Open Space Preserve and the Loma Alta Open Space Preserve, offering a rare opportunity for wooded singletrack in Marin County's open space system. The 2.5-mile Big Rock Trail singletrack descent is particularly prized by local mountain bikers for its flowing character. It's a true hidden gem for those seeking top-rated mountain biking trails near Sleepy Hollow.

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6.

Glen Fire Rd Trailhead 🌳 – Fairfax Falls 🌊 loop from Fairfax

13.7km

01:13

220m

220m

The Glen Fire Rd Trailhead – Fairfax Falls loop from Fairfax offers a pleasant mountain biking experience, starting on a wide fire road that winds alongside a creek, providing welcome shade. As you gain elevation, the terrain opens up, revealing rolling sections and a mix of dirt and gravel under your tires. While the 'Fairfax Falls' might be a modest trickle depending on the season, the route provides a good workout and, in its upper reaches, can offer panoramic views of the San Francisco city skyline and Mount Tamalpais, especially when linked with other trails.

Planning your ride is straightforward, as this multi-use fire road is accessible year-round, even in wet conditions. Parking is available at the Glen Fire Rd Trailhead, and it's always wise to arrive early, particularly on weekends. This trail is dog-friendly, allowing leashed companions to join you, and no special permits are required for access.

This route is a great option for those looking for an easy 8.5-mile (13.7 km) mountain bike loop with 712 feet (217 metres) of elevation gain, typically completed in about 1 hour and 13 minutes. It's part of the larger Loma Alta Open Space and Blithedale Summit Open Space Preserve, connecting to other significant trails like Corte Madera Ridge Fire Road, and showcasing the varied landscapes characteristic of mountain biking in Fairfax, California.

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7.

Camp Tamarancho Trailhead – B-17 crash site loop from Fairfax

12.6km

01:20

370m

370m

The Camp Tamarancho Trailhead – B-17 crash site loop from Fairfax offers a dynamic mountain biking adventure through diverse terrain, from smooth forest singletrack to challenging rocky sections. You'll ride through beautiful redwood and oak-forested landscapes, encountering features like the technical Alchemist Trail and the exhilarating Endor flow trail, designed for continuous movement and air time. This difficult 7.9-mile (12.6 km) loop with 1216 feet (371 metres) of elevation gain, typically completed in 1 hour and 19 minutes, is best suited for intermediate to advanced riders who enjoy technical features and fast descents. It's a standout option for those seeking a dedicated mountain biking experience in Marin County.

Before hitting the trails, be aware that Camp Tamarancho is private property, and a permit is mandatory. You can purchase either a $6 day pass or an annual pass ranging from $55 to $95. This ensures access to a well-maintained network specifically built for mountain biking, a rarity in the region. Plan to secure your permit in advance to avoid any delays at the trailhead.

This route is particularly notable for its historical connection to a B-17 bomber crash in 1946, which gives the B-17 Trail its name, and for hosting the Bay Area's first

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9.

Porcupine Trail loop from Woodacre

7.70km

00:53

240m

240m

Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.

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Tips from the Community

serge 🚶🐉😊🇧🇪
October 12, 2025, Marin Museum of Bicycling

An absolute must-see for cycling enthusiasts! This museum in Fairfax tells the story of nearly 200 years of cycling history, from 19th-century velocipedes to modern racing bikes. It's also home to the Mountain Bike Hall of Fame, featuring unique specimens and stories about the pioneers of mountain biking. The collection is impressive and authentic—no replicas, but real bicycles that showcase the evolution of technology and design. An inspiring place where you can truly feel the passion for cycling.

Translated by Google

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Eric Cross
August 10, 2025, Phoenix Lake

log cabin at phoenix lake

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Alex
May 19, 2025, 680 Trail

The 680 Trail in Marin County has access points at the end of Manuel T. Freitas Parkway via the Mission Pass Bike Path and Fawn Drive. The terrain is fun, rolling trails.

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At the junction of Chicken Shack Fire Road and Ponti Ridge Trail. There are benches, a great view, and trail markers.

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Get there early limited parking

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Matthew
February 14, 2024, Loma Alta Summit

Loma Alta literally translates to "high hill" and is the highest point in the Loma Alta Open Space Preserve. A few different dirt roads and trails lead to the bald summit that looks over the surrounding hillsides.

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Embark on an adrenaline-fueled mountain biking adventure through Big Rock. The trail reaches its peak at the towering landmark, a colossal rock that adds a unique touch to the experience. Exercise caution on the descent; the pavement can get slippery, adding an exhilarating challenge to this thrilling ride.

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oliviakellis
November 25, 2023, Big Rock Ridge

Big Rock Ridge, a striking ridge near Novato, California, standing as Marin County's second-tallest peak. Spanning 5 miles from northwest to east, it creates a natural boundary for central and southern Marin County. Named after the rock at the base of Big Rock Trail, this ridge promises awe-inspiring views and invigorating trails.

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Frequently Asked Questions

How many mountain bike trails are available around Sleepy Hollow?

There are over 100 mountain bike routes available around Sleepy Hollow, offering a wide range of experiences for different skill levels. The komoot community has explored more than 105 tours in the area.

Are there mountain bike trails suitable for beginners in Sleepy Hollow?

Yes, Sleepy Hollow offers trails suitable for beginners. There are 13 easy routes, such as the Glen Fire Rd Trailhead 🌳 – Fairfax Falls 🌊 loop from Fairfax, which is 8.8 miles (14.1 km) long and features minimal elevation changes, making it a great option for those new to mountain biking.

What are the options for advanced mountain bikers in Sleepy Hollow?

Advanced mountain bikers will find plenty of challenging routes around Sleepy Hollow. There are 35 difficult trails, including the Hoo-Koo-E-Koo Fire Road Trail – Bon Tempe Dam 🚵 loop from Fairfax, which spans 25.9 miles (41.6 km) with over 1000 meters of elevation gain, and the 680 Trail – Big Rock Ridge loop from Sleepy Hollow, a 21.9 miles (35.3 km) route with significant climbs and expansive views.

Are there any loop trails for mountain biking in Sleepy Hollow?

Yes, many mountain bike trails in Sleepy Hollow are designed as loops. Examples include the Porcupine Trail – Camp Tamarancho Trailhead loop from Woodacre, a moderate 8.3 miles (13.3 km) route, and the more challenging Camp Tamarancho Trailhead – B-17 crash site loop from Fairfax, which is 7.8 miles (12.6 km) long.

What kind of natural features can I expect to see along the mountain bike trails?

The mountain bike trails around Sleepy Hollow offer diverse natural landscapes. You can encounter dense woodlands, rolling hills, and scenic paths. For specific natural monuments, consider exploring areas near Mount Tamalpais Summits or the unique Pygmy (dwarf) sargent cypress forest 🌲🌲.

Are there any interesting landmarks or attractions near the mountain biking routes?

Yes, there are several interesting landmarks and attractions. You might come across The Big Rock - Skywalker Ranch, a notable natural monument. For those interested in cycling history, the Marin Museum of Bicycling is also nearby.

What do other mountain bikers enjoy most about the trails in Sleepy Hollow?

The mountain biking experience in Sleepy Hollow is highly rated by the komoot community, with an average score of 4.6 stars from over 270 reviews. Riders often praise the diverse landscapes, ranging from challenging singletrack to scenic paths, and the variety of options available for different ability levels.

What is the best season for mountain biking in Sleepy Hollow?

While specific seasonal conditions can vary, the region generally offers good mountain biking opportunities across multiple seasons due to its varied terrain. It's always advisable to check local weather and trail conditions before heading out, especially during winter or after heavy rainfall.

Are there any cafes or places to eat near the mountain bike trails?

Yes, you can find places to refuel near the trails. For example, Splitrock Tap & Wheel is a highlight in the area, offering a spot to relax and grab a bite after your ride.

What kind of terrain can I expect on the mountain bike trails in Sleepy Hollow?

The terrain around Sleepy Hollow is quite varied. You'll encounter everything from technical singletrack with roots and rocks to smoother carriage trails and scenic paths along reservoirs. The region features rolling hills and dense woodlands, providing a dynamic riding experience.

Are there any family-friendly mountain biking options in Sleepy Hollow?

While specific 'family-friendly' designations aren't always clear, the presence of 13 easy routes suggests there are options suitable for families or those looking for a less strenuous ride. These easier trails often have fewer elevation changes and smoother surfaces.

Where can I find parking for mountain biking trails in Sleepy Hollow?

Specific parking information varies by trailhead. Many trailheads, especially for popular parks and preserves, typically offer designated parking areas. It's recommended to check the individual route details on komoot for specific parking instructions for your chosen trail.

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