Marin County, California

Looking for the best mountain biking in Marin County? We've got you covered with the top trails, trips, hiking, backpacking, camping and more around Marin County. The detailed guides, photos, and reviews are all submitted by the Outbound community.

Top Mountain Biking Spots in and near Marin County

  • Danville, California

    Hike in Mount Diablo's Madrone Canyon

    2.8 mi / 550 ft gain
    This hike starts at the Rock City area of Mount Diablo State Park. Begin at the Madrone Canyon Trail, hiking southeast towards the Devils Slide trail. Along this section of the hike, the trail dips into a wooded canyon and follows the path of a small creek. To best experience the beauty of the cr...
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  • Half Moon Bay, California

    Cowell-Purisima Coastal Trail

    4.5
    6.8 mi / 528 ft gain
    This trail begins at the Cowell State Beach parking lot and is only open on the weekends. From the lot, take the short Cowell Ranch Access trail to a scenic overlook. There are steps down to the secluded pocket beach just above the main trail. The trail playfully meanders along the cliffside with...
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  • Half Moon Bay, California

    Whittemore Gulch via Purisima Creek Road

    6.44 mi / 1870 ft gain
    This beautiful mountain bike ride can be started at the Purisima Creek Road Trailhead or on Skyline Boulevard. There are many trails in the Purisisma Creek Redwoods, but Whittemore Gulch is by far the most beautiful and fun single track to descend on. Starting Options:Start at Purisima Creek Roa...
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