The best MTB trails around San Anselmo
4.6
(404)
3,766
riders
120
rides
Mountain biking around San Anselmo offers a diverse landscape characterized by rolling hills, dense redwood and oak forests, and scenic fire roads. The region, nestled in Marin County, provides a mix of challenging climbs and flowing singletrack. Many trails wind through protected open spaces, offering varied terrain from shaded woodland paths to exposed ridge lines with views.
Best mountain bike trails around San Anselmo
- The most popular mountain bike trail is Fairfax Tamarancho Trails loop, a 11.1 miles (17.8 km) trail that takes 1 hour 42 minutes to complete. This difficult route navigates the well-known Tamarancho trail system, featuring technical sections and varied terrain.
- Another top favourite among local mountain bikers is Marin Three Lakes loop, a moderate 10.4 miles (16.8 km) path. This route offers scenic views around the area's lakes and through forested sections.
- Local mountain bikers also love the Tamarancho to Cascade Fire Road loop, a 14.5 miles (23.4 km) trail leading through forested hills and along fire roads, often completed in about 2 hours 30 minutes.
- Mountain biking around San Anselmo is defined by forested hills, fire roads, and varied singletrack. The network offers options for all ability levels, from beginner mountain bike trails San Anselmo to advanced mountain bike trails San Anselmo.
- The routes in San Anselmo are highly rated by the komoot community with an average score of 4.6 stars from over 390 reviews. More than 3600 mountain bikers have used komoot to explore San Anselmo's varied terrain.
Last updated: June 25, 2026
5.0
(28)
294
riders
17.8km
01:42
410m
410m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.9
(7)
45
riders
16.8km
01:39
370m
370m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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22
riders
23.4km
02:30
720m
720m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.0
(3)
42
riders
34.0km
03:33
950m
950m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
3.0
(1)
43
riders
19.2km
01:53
550m
550m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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Tips from the Community
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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Where Eclipse and Solstice Trails intersect.
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This town, nestled in the forested hills among unspoiled open space in Marin County, is a nice respite from the large nearby metropolis. It is a quirky, hip place with a small-town vibe filled with restaurants, music venues, and independent shops. Fairfax is home to many musicians who live here, and on any given night, you can find live music featuring local and national touring acts jamming in a relaxed, casual atmosphere. It has a very cycle-friendly culture, and be sure to take the time to visit the Museum of Bicycling while you are here!
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Non-profit exhibit of some cool historic bikes, including some of the mountain bikes invented here
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There is a great view of the northern point of Alpine lake where a small channel feeds over to Bon Tempe Lake. This is a great place to drop a line, or just enjoy the aquatic views.
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Great spot post hiking or biking, good beer, good vibes, great food, and vegan options!
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On Shaver Grade Road, you get to ride along the incredibly blue waters of Phoenix Lake.
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Frequently Asked Questions
How many mountain bike trails are available around San Anselmo?
There are over 125 mountain bike trails around San Anselmo. This diverse network offers options for all ability levels, from beginner to advanced riders, winding through forested hills, fire roads, and varied singletrack.
Are there easy mountain bike trails suitable for beginners in San Anselmo?
Yes, San Anselmo offers a good selection of trails for beginners. Out of the 125 available routes, 16 are classified as easy, providing a gentle introduction to mountain biking in the area's scenic landscapes.
What is the typical length and duration of mountain bike trails around San Anselmo?
The mountain bike trails around San Anselmo vary significantly in length and duration. For example, the popular Marin Three Lakes loop is about 10.4 miles (16.8 km) and takes around 1 hour 40 minutes, while the more challenging Tamarancho to Cascade Fire Road loop covers 14.5 miles (23.4 km) and typically takes 2 hours 30 minutes.
Are there challenging mountain bike trails for experienced riders in San Anselmo?
Absolutely. San Anselmo is known for its challenging terrain, with 38 routes classified as difficult. The Fairfax Tamarancho Trails loop is a prime example, navigating the technical sections of the Tamarancho trail system.
When is the best time of year to go mountain biking in San Anselmo?
Given San Anselmo's Mediterranean climate, mountain biking is generally enjoyable year-round. However, the spring and fall months offer the most pleasant temperatures and lush scenery. Winter can bring rain, making some trails muddy, while summer can be warm, so early morning rides are often preferred.
What kind of wildlife might I encounter on the trails?
The trails around San Anselmo wind through dense redwood and oak forests and open spaces, providing habitats for various wildlife. You might spot deer, various bird species, and smaller mammals. Always ride responsibly and respect their natural environment.
Are there any mountain bike trails that are loop routes?
Yes, many of the mountain bike trails around San Anselmo are designed as loops, offering a convenient way to explore the area without retracing your steps. Popular examples include the Fairfax Tamarancho Trails loop and the Marin Three Lakes loop.
What do other mountain bikers enjoy most about the trails in San Anselmo?
The mountain bike trails in San Anselmo are highly rated by the komoot community, with an average score of 4.6 stars from over 390 reviews. Riders frequently praise the diverse landscape, from rolling hills and dense forests to scenic fire roads, and the mix of challenging climbs and flowing singletrack.
Are there any waterfalls or lakes to see along the mountain bike trails?
Yes, the region around San Anselmo features beautiful natural attractions. While mountain biking, you might find yourself near highlights such as Phoenix Lake or Lagunitas Trail. For waterfalls, consider exploring areas like Fairfax Falls or Carson Falls, which are often accessible via nearby trails.
Are there specific trailheads or areas to focus on for mountain biking in San Anselmo?
The Tamarancho trail system is a prominent area for mountain biking, offering a variety of routes like the Fairfax Tamarancho Trails loop. Many routes also utilize fire roads, providing access to forested hills and scenic viewpoints.
Can I find family-friendly mountain bike trails in San Anselmo?
Yes, San Anselmo offers several family-friendly options, particularly among its 16 easy-rated trails. These routes typically feature less technical terrain and gentler gradients, making them suitable for families looking to enjoy a ride together in nature.
What should I wear for mountain biking in San Anselmo?
Given the varied terrain and potential for changing weather, it's advisable to wear layers. Moisture-wicking clothing, appropriate padding, and a helmet are essential. Depending on the season, consider sun protection for exposed ridge lines or waterproof gear for potential rain.
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