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United States
California
Marin County

Lagunitas-Forest Knolls

The best gravel rides around Lagunitas-Forest Knolls

4.0

(5)

94

riders

13

rides

Gravel biking around Lagunitas-Forest Knolls, located in Marin County, offers diverse terrain and an extensive network of trails. The region is characterized by lush redwood forests, rolling hills, and vital waterways such as Lagunitas Creek and San Geronimo Creek. Riders can expect a mix of flowy doubletrack and fire roads, with some unpaved segments providing varied riding conditions. This area provides a quintessential gravel riding experience within Marin County, featuring both moderate and challenging routes.

Best gravel bike trails around…

Last updated: April 30, 2026

4.0

(2)

35

riders

#1.

Alpine Dam – Alpine Lake loop from Sleepy Hollow

65.9km

04:42

1,010m

1,010m

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Popular around Lagunitas-Forest Knolls

Hiking around Lagunitas-Forest Knolls

Running Trails around Lagunitas-Forest Knolls

Road Cycling Routes around Lagunitas-Forest Knolls

MTB Trails around Lagunitas-Forest Knolls

Cycling around Lagunitas-Forest Knolls

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.

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Eric Cross
August 10, 2025, Phoenix Lake

log cabin at phoenix lake

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Andrus
May 26, 2025, Alpine Dam

Constructed in 1917 this dam forms Alpine Lake, which sites between Kent and Bon Tempe Lakes. The road across the top of the dam make it a great place to ride on a loop around the lake.

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Andrus
May 25, 2025, Alpine Lake

This lake was formed by the building of Alpine Dam in 1917. It sits between Kent Lake and Bon Tempe Lake, and is popular for a variety of outdoor activities.

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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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At this point on Sky Oaks Road, there is a junction with Shaver Grade Road, which connects with a dense network of trails and dirt roads near Bald Hill in the Mount Tamalpais State Park. From here, you can continue on the paved Sky Oaks Road or go arond the gate on to the gravel Shaver Grade Road.

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Steep heading West can have traffic on SFD

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Frequently Asked Questions

How many gravel bike trails are available around Lagunitas-Forest Knolls?

There are 14 gravel bike routes documented around Lagunitas-Forest Knolls on komoot, offering a range of experiences from moderate to difficult.

What kind of terrain can I expect on gravel bike trails in Lagunitas-Forest Knolls?

You can expect a diverse mix of terrain, including flowy doubletrack and fire roads. Some segments are unpaved and can be challenging, requiring good fitness and advanced riding skills. The region features rolling hills, redwood forests, and scenic areas along Lagunitas Creek.

Are there any beginner-friendly gravel bike trails in the area?

While many routes are challenging, there is one easy route and three moderate routes available. For a more accessible experience, the Cross Marin Trail, though paved, offers a beautiful ride alongside Lagunitas Creek and through redwood forests, and connects to other gravel trails. Options like Old Railroad Grade and trails around Bon Tempe Lake also provide a mix of road and gravel surfaces suitable for beginners.

What are some of the more challenging gravel routes in Lagunitas-Forest Knolls?

For experienced riders seeking a challenge, routes like the Alpine Dam – Alpine Lake loop from Sleepy Hollow, which covers 65.2 km with significant elevation gain, are popular. Another demanding option is the Fairfax – Big Rock Ridge loop from Fairfax, spanning 52.4 km with over 1500 meters of ascent.

Are there any gravel routes that offer scenic views or natural landmarks?

Absolutely. Many routes provide stunning vistas, especially those on Bolinas Ridge, which offer views of rolling hills and redwood groves. You'll also ride through magnificent redwood forests, particularly along the Cross Marin Trail and within Samuel P. Taylor State Park, with Lagunitas Creek often paralleling the paths.

What attractions or points of interest can I find near the gravel trails?

Beyond the trails, you can explore Marin Museum of Bicycling in Fairfax, which celebrates cycling history. Nature lovers might enjoy Bon Tempe Dam or the nearby Samuel P. Taylor State Park. For a unique natural wonder, the renowned Point Reyes National Seashore is home to Alamere Falls, a rare 'tidefall' that flows directly into the ocean.

Are there any waterfalls accessible from or near the gravel biking routes?

Yes, the region features several waterfalls. You might encounter Upper Peters Dam Road Waterfall or Carson Falls. Further afield, the spectacular Alamere Falls at Point Reyes National Seashore is a notable natural attraction.

What do other gravel bikers say about the trails in Lagunitas-Forest Knolls?

The gravel biking experience in Lagunitas-Forest Knolls is highly rated by the komoot community, with an average score of 4.5 stars. Over 100 gravel bikers have explored the varied terrain, often praising the diverse landscapes, from redwood forests to rolling hills, and the mix of doubletrack and fire roads.

Are there any loop routes for gravel biking in Lagunitas-Forest Knolls?

Yes, many of the gravel routes are designed as loops. For example, the moderate Phoenix Lake – Fish Gulch trail junction loop from Fairfax is a popular option, as is the more difficult Fish Gulch trail junction – Hoo-Koo-E-Koo Fire Road Trail loop from Fairfax.

What is the typical duration for a gravel bike ride in this area?

Ride durations vary significantly based on the route's distance and difficulty. Moderate loops like the Phoenix Lake – Fish Gulch trail junction loop from Fairfax can take around 2 hours 27 minutes, while more challenging routes such as the Fairfax – Alpine Lake - Bon Tempe Dam loop from Fairfax typically require about 4 hours 9 minutes to complete.

Is there a good route for exploring the redwood forests on a gravel bike?

Yes, the Cross Marin Trail is an excellent choice for experiencing the redwood forests. While paved, it follows an old railway bed alongside Lagunitas Creek and through towering redwoods, and it connects to various gravel trails that lead into more forested areas.

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