Mill Valley, California

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

Top Mountain Biking Spots in and near Mill Valley

  • Oakland, California

    Dunn Loop

    5.0
    3.08 mi / 758 ft gain
    The Redwood Regional Dunn Loop is just outside of Oakland, and can be reached from anywhere in the Bay Area for a fun day or half-day trip. The trail is open year-round. In the spring, wildflowers are abundant. The trail has a great mix of sun and shade. Dogs are allowed, but must be kept on leash. 
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  • Sonoma, California

    Sonoma Valley Wine Tour Bike Ride

    This 12 mile bike path starts at a rental shop in Sonoma Country called Sonoma Valley Bike Tours and Rentals. Follow the trail through the quaint residential area and into the back country vineyards and dirt trails. This ride can be anything between a hardcore 2 hour cycling workout with a few in...
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  • Inverness, California

    Marshall Beach

    5.0
    2.41 mi / 305 ft gain
    Marshall Beach located on the Tomales Bay side of Point Reyes National Seashore is reached via an out-and-back hiking or mountain biking trail.  Camping:There are boat-in campsites available at Marshall Beach. The campsite does not permit hike-in campers, boat-in only via kayak, canoe, paddleboa...
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  • Moraga, California

    Bollinger Creek Loop Trail

    1.43 mi / 213 ft gain
    Las Trampas Regional Wilderness offers an extensive trail system for hikers, horseback riders and mountain bikers. The trail is open year round and dogs are allowed. The Las Trampas and Bollinger faults spread apart to reveal a wonderful wilderness area with ancient remnants of beaches. The entir...
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  • Walnut Creek, California

    Castle Rock Trail

    5.0
    6.06 mi / 971 ft gain
    Located near Walnut Creek, the trail is easily accessible from anywhere in the Bay Area. The trail is kept open year-round, and happens to be part of the American Discovery Trail and the Coast to Crest trail. If you are not done hiking, connecting trails allow you to summit Mt. Diablo.  This tra...
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  • Walnut Creek, California

    Run the Mt. Diablo Foothill Loop

    5.0
    6.2 mi / 875 ft gain
    Continue by car down Castle Rock Road until it dead ends at the beginning of the trail. Parking is usually easy to find. If full, there is another overflow lot about 500 ft back the way you came in.You'll walk a good half mile down the trail before getting the main gate. As you're walking, you'll...
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  • Santa Rosa, California

    Crane Creek Canyon Loop

    4.3
    1.4 mi / 154 ft gain
    With multiple loops of varying length, this park is great for anyone looking for a casual hike around a beautiful area in the foothills of Rohnert Park. Crane Creek has nice secluded picnic areas next to the creek in the cover of willow, alder, buckeye and bay trees. There's also an 18-hole disc ...
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  • Glen Ellen, California

    Sonoma Ridge Trail

    9.2 mi / 1955 ft gain
    Sonoma Ridge Trail is a beautiful 9.2-mile out-and-back hike located near Glen Ellen, California. This hike is moderately difficult, with about 1955 feet in elevation change. 95% of the trail is covered in forest shade. Important Notes:Bikes and Horses are permitted on the trails. Dogs are NOT p...
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  • Napa, California

    Alston Park Loop Trail

    5.0
    2.76 mi / 184 ft gain
    Alston Park Loop Trail, located in Napa, California, is a 2.76-mile loop trail that offers a moderate level of difficulty for hikers. The trail is primarily used for hiking, walking, and running and is accessible year-round. The trail is well-maintained and clearly marked, making it suitable for ...
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  • Walnut Creek, California

    Juniper to the Summit Loop Trail and Meridian Ridge

    6.56 mi / 2037 ft gain
    Juniper to the Summit Loop Trail and Meridian Ridge is a loop trail that is strenuous located near Diablo, California.
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  • Danville, California

    Summit Mount Diablo via Rock City Trail

    5.0
    7.8 mi / 2299 ft gain
    Although steep in sections, this trail is a wonderful workout and hikers are more than rewarded for their efforts. The Rock City Trail is a direct route to the summit of Mount Diablo, and the park is an ecological treasure dear to the hearts of Bay Area residents. The best views are on clear days...
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  • 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

    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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  • 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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  • Redwood City, California

    Stulsaft Park Loop

    4.0
    0.91 mi / 98 ft gain
    Stulsaft Park Loop in Redwood City, California, is a scenic and family-friendly 0.9-mile loop trail, ideal for hiking, walking, and running. This is a relatively easy stroll with only 98 feet of elevation gain and is accessible for people of all fitness levels. This trail is also particularly pop...
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  • Redwood City, California

    Methuselah and El Corte De Madera Creek Loop

    6.5 mi / 1778 ft gain
    This loop hike will provide people with the opportunity to experience the tranquility of the lower canyons of the preserve, which tend to be more isolated than the heavier-trafficked trails that are closer to the main highway. Be warned that this hike is fairly strenuous because of the large amo...
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