Best bike parks around San Geronimo offer diverse natural mountain biking experiences within a landscape characterized by redwood groves, coastal views, and peaceful meadows. The region features trails ranging from moderate loops to mellow, scenic rides, often connecting to larger open space preserves. San Geronimo is known for its conservation value, protecting natural conditions and diverse ecosystems. This area provides various trails for different skill levels, from easy paths to more challenging routes.
Last updated: May 12, 2026
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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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Good supporter of Marin Biking and nice lot to start your ride from and have a beer after
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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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Non-profit exhibit of some cool historic bikes, including some of the mountain bikes invented here
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Splitrock Tap & Wheel was built by diehard mountain bike riders for the community that we love; staffed and run by experienced, professional, approachable people who ride like you do, and understand the unique needs of riders that ride here in Northern California. Our store features the best performing bikes and eBikes in the world from Specialized and Transition and a full range of parts and accessories to support the most demanding riders on their daily rides. The Splitrock service department is a team of 6 experienced mechanics whose combined time in front of the bench spans decades. Our café space has evolved into a community gathering place, serving delicious pizzas, sandwiches, and salads alongside an every changing list of California’s best, freshest micro-brews. With 15 taps, heated inside and outside gathering spaces and mud/dirt resistant seating, Splitrock is the perfect spot to start and finish your ride, and find everything you need to get and keep your bike working day after day.
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Goldman Trail is part of the Camp Tamarancho trail system. You can expect a flowy rolling singletrack with a few switchbacks.
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As the name implies, a big bolder marks the crest of Lucas Valley Road above Skywalker Ranch, the elusive retreat and production studios of George Lucas and his various film projects.
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San Geronimo offers diverse natural mountain biking experiences, ranging from moderate loops with Pacific Ocean views to mellow, scenic rides through conserved natural landscapes. You'll find trails suitable for various skill levels, often connecting through redwood groves and peaceful meadows.
Yes, for a relaxed outing,
San Geronimo Park and San Geronimo Commons offer mellow biking with mostly flat, easy loops or out-and-back trails. These areas are ideal for families or those seeking a leisurely ride amidst scenic natural beauty.
For more challenging rides, consider the Eldridge Grade Fire Rd Trail (upper half) 🚵 Mt Tam, known for its rocky terrain, especially after rains. The Tamarancho area also offers a 14.5-mile loop with diverse terrain, including sections requiring good fitness and advanced riding skills, and boasts Pacific Ocean views.
You can enjoy stunning Pacific Ocean views from trails in the Tamarancho area. The The Big Rock - Skywalker Ranch is a natural monument and viewpoint marking the crest of Lucas Valley Road. Additionally, Bon Tempe Dam 🚵 offers beautiful lake views within the Mt Tamalpais watershed.
Absolutely! The Marin Museum of Bicycling in Fairfax is a must-visit. It's a premier bicycle history museum and cultural center, home to the Mountain Bike Hall of Fame, showcasing the birth and evolution of the mountain bike with extraordinary bikes dating from 1868 onward.
Splitrock Tap & Wheel is a community hub built by mountain bike riders. It serves delicious pizzas, sandwiches, and salads alongside a changing list of California's best micro-brews, making it a perfect spot to start and finish your ride.
Beyond mountain biking, the San Geronimo area is excellent for other outdoor pursuits. You can find numerous hiking trails, including the Bolinas Ridge Loop and Kent Lake via Candalero Canyon Loop. There are also great options for cycling and road cycling routes, such as the Cross-Marin Trailhead loop or the Hicks Valley Road Loop.
San Geronimo Ridge Road runs east to west along a ridge, offering rolling terrain with a small amount of elevation change. It's a less strenuous but engaging ride and provides a connector to more challenging trails in the Tamarancho area.
Yes, San Geronimo Park is a conservation haven with significant ecological value. It protects natural conditions and diverse ecosystems, including the presence of endangered Coho Salmon and threatened Steelhead Trout in Larsen Creek and San Geronimo Creek.
While specific conditions vary, the region is generally enjoyable for biking outside of heavy winter rains. Some trails, like Eldridge Grade, can become particularly rocky and challenging after wet weather. Spring and fall often offer ideal conditions with milder temperatures and less precipitation.
While specific parking details for every trailhead are not provided, areas like San Geronimo Park and San Geronimo Commons are designed for public access, suggesting parking facilities are available for visitors. It's always advisable to check local signage upon arrival.
The provided information does not indicate that permits are generally required for biking on the public trails mentioned in San Geronimo. However, it's always good practice to check with local park authorities for any specific regulations or changes before your visit.


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