The best MTB trails in Cascade Canyon Open Space Preserve

The Pine Mountain Loop offers a challenging mountain biking experience through Marin County's scenic landscapes. You'll navigate primarily fire roads, but expect very rocky and steep sections, some with grades over 20%, that demand technical skill. The route rewards your effort with expansive views of the San Francisco Bay and Tomales Bay, and a unique passage through a dwarf Sargent cypress forest.

This moderate 15.6-mile (25.2 km) loop involves a significant 2349 feet (716 metres) of elevation gain, typically taking around 2 hours and 36 minutes. Winter flooding can create ruts, so be prepared for potentially rougher conditions. The trail can feel remote in parts, so carry enough water and supplies for the duration of your ride.

Beyond the physical challenge, this trail is steeped in mountain biking history, overlapping with Repack Road, considered a birthplace of the sport. It also forms part of the long-standing Thanksgiving Day 'Appetite Seminar' ride. The route offers a substantial, winding descent if ridden clockwise, but watch out for the notorious 'ET curve' known for spills.

The Fairfax Tamarancho Trails loop offers mountain bikers a diverse and demanding ride through the scenic landscapes at the foot of Mount Tamalpais. You'll navigate through shaded redwood groves, open meadows, and varied terrain that includes technical singletrack, flow trails, and fire roads. Expect features like switchbacks, roots, and challenging rock gardens, making this a truly engaging experience for those with advanced riding skills.

Planning your ride requires a day pass or annual pass to access the Camp Tamarancho trail system, which helps fund its upkeep. Parking is available at the Camp Tamarancho Trailhead. Given the route's difficult rating and 1 hour and 41 minutes estimated duration for 11.1 miles (17.8 km) and 1333 feet (406 metres) of elevation gain, starting earlier in the day is advisable to allow ample time and avoid afternoon heat.

This trail system is located in Fairfax, a town steeped in mountain biking history, often called its "birthplace." The network is renowned for its blend of technical challenges and natural beauty, including the pioneering Endor Flow Trail with its smooth rollers and berms. It's a must-ride for those seeking advanced mountain biking trails in the Bay Area.

The Tamarancho to Cascade Fire Road loop offers a fantastic mountain biking adventure, blending varied terrain from dense redwood and oak forests to open meadows. You'll navigate technical singletrack sections, including flow trails like Endor, before hitting the exhilarating, fast descent of Repack Road. This moderate route covers 14.5 miles (23.4 km) with 2362 feet (720 metres) of elevation gain, typically taking around 2 hours and 29 minutes to complete.

Planning your ride requires a bit of foresight. Camp Tamarancho is private property, so you'll need to purchase and carry a day pass, which costs about $6. Parking is available in Fairfax, but be prepared to ride your bike from town to the trailhead on Iron Springs Road. Keep in mind that dogs are not allowed, and the trails are closed during wet or muddy conditions.

This loop holds a special place in mountain biking history, as Repack Road (Cascade Canyon Road) is famously known as the birthplace of the sport, hosting the original Repack Race in the 1970s. The trail system is well-maintained and offers an excellent mix of challenging features within Tamarancho, followed by the high-speed thrill of the Repack descent, making it a unique experience in Marin County.