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San Geronimo, California

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

Top Hiking Spots in and near San Geronimo

  • Calistoga, California

    Camp at Bothe-Napa Valley SP

    4.5
    Looking for a romantic getaway but you’d prefer to spend your nights around a campfire? This adventure is for you. This beautiful Napa Valley campground has it all – 10 miles of hiking trails, 1,900 acres to explore, and…new yurts! Yurts are basically cool circular tents that allow you enjoy the ...
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  • Saint Helena, California

    Lake Hennessey Loop

    5.0
    6.53 mi / 764 ft gain
    The "lollipop" hike starts at the "Ranch House" parking lot off of Chiles Pope Valley Road - alternatively, you can access from Conn Valley Road for a shortened 5.6-mile loop. You turn off Chiles Pope Valley Road onto Moore Creek Trail, drive past a private house (you can see it on the map) and t...
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  • Belmont, California

    Hike San Mateo's Sugarloaf Mountain

    5.0
    1.5 mi / 500 ft gain
    Sugarloaf is tucked away in Laurelwood Park which is located in a residential neighborhood right off of Hwy 92 in San Mateo, making this a great hiking & trail running option for Peninsula residents.I always park on Glendora Dr. and follow the paved path down towards the playground. At the bo...
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  • Half Moon Bay, California

    Hike Along the Half Moon Bay Coastal Trail

    4.6
    5 mi / 104 ft gain
    Start at the visitor center along Kelly Avenue. Take note that the day parking fee is $10 in 2016 for each vehicle. You will then be able to enjoy both the Coastside Trail and Francis Beach (plus other beaches) with access to the amenities such as coin-operated showers and a semi-private beach.Th...
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  • Clayton, California

    Hike Mt. Diablo

    4.4
    13 mi / 3323 ft gain
    Mt. Diablo has some of the most expansive views in California, despite it's relatively low peak elevation. It played a large role in the surveying the Bay Area during its early discovery. Getting There: To get to the staging area, take Interstate 80 to I-680 to Highway 4. Exit at Railroad Bouleva...
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  • Calistoga, California

    Hike the Oat Hill Mine Trail

    5.0
    8.3 mi
    The incline on this trail begins pretty much right away and is fairly gradual for the entire hike, some of it is quite rocky, making this an easy to moderate level hike. However, with some shade (probably wouldn't attempt it on a hot summer day) and the sweeping views of the valley that get bette...
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  • Calistoga, California

    Hike Bald Hill in Robert Louis Stevenson State Park

    3.2 mi / 1200 ft gain
    Bald Hill is the first serious peak/summit that can be reached via the Oat Hill Mine Trail as it breaks from the more popular loop and heads into the heart of Robert Louis Stevenson State Park. To get there you can either begin at the less frequently used trailhead at Picket and Rosedale Roads he...
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  • Guerneville, California

    East Ridge - Pool Ridge Loop

    4.5
    3.37 mi / 810 ft gain
    This park most resembles Muir Woods, and if you're looking to get out of the tourist trap, head to Armstrong Redwoods and make a day of it. This 3-mile hike takes off from the sign pointing to East Ridge Trail. As you begin a slight climb up the trail, you'll be under the cover of the redwoods, s...
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  • Clayton, California

    Hike the Waterfalls of Mount Diablo Loop Trail

    5.0
    6 mi / 1627 ft gain
    Winter and spring rains create scenic waterfalls in this hike at Mount Diablo, the East Bay's signature peak. Be careful hiking immediately post-rain, watch for slippery sections of mud. The trail is moderately difficult and is used by hikers, walking groups, trail runners, and for nature trips. ...
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  • Guerneville, California

    Parson Jones and Colonial Armstrong Redwood Trees

    5.0
    The Parson Jones Tree is the tallest tree in the reserve, measuring more than 310 feet (94 m) in height. This is longer than the length of a football field!  Named after a lumberman who chose to preserve this portion of the park in the 1870s, the Colonel Armstrong Tree is the oldest tree in the ...
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  • Walnut Creek, California

    Camp at Juniper Campground in Mount Diablo SP

    Mount Diablo's summit in Mount Diablo State Park rises to 3,848ft, with Juniper Campground in Mount Diablo SP is at approximately 3,000ft in elevation.  Juniper Campground overlooks the valley below and some of the San Francisco Bay.  Reservations for Juniper Campground can be made at Reserveamer...
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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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  • Guerneville, California

    Austin Creek State Recreation Area Loop

    5.0
    8.65 mi / 1722 ft gain
    The hike starts at the Gilliam Creek Trailhead, halfway up Armstrong Woods Road on the way to Bullfrog Pond. There is an $8 fee to enter the park, to be paid at the ranger kiosk as you enter Armstrong Woods.  HIKING Begin hiking by descending the Gilliam Creek Trail. The descent is long and ste...
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  • Redwood City, California

    Hike the Pulgas Ridge Open Space Preserve Loop

    3.7
    5.5 mi / 1000 ft gain
    Getting there: exit Highway 280 at Edgewood Road, travel .75 miles east, turn left on Crestview Drive, then immediately left again on Edmonds Road.Once parked, there are several different path options through the park. All of them connect in a large loop, and return to the parking lot. The Cordil...
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