Best mountain peaks near San Geronimo California, while often referred to as hills or ridges, offer significant recreational value and scenic beauty. The San Geronimo Valley in Marin County features a collection of prominent elevated features that provide diverse natural beauty, recreational opportunities, and panoramic views. These features are integral to the region's appeal, characterized by rolling hills, lush forests, and scenic trails.
Last updated: April 29, 2026
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Steep heading West can have traffic on SFD
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Big Rock Ridge, a striking ridge near Novato, California, standing as Marin County's second-tallest peak. Spanning 5 miles from northwest to east, it creates a natural boundary for central and southern Marin County. Named after the rock at the base of Big Rock Trail, this ridge promises awe-inspiring views and invigorating trails.
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Highest point on Big Rock Ridge Fire Road with panoramic views of the Bay, Marin county, and even across the East bay to Mt. Diablo and south to San Francisco. A short spur trail here leads to a point with slightly better views down over Skywalker Ranch and the Lucas Valley.
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Big Rock Trail cuts through Lucas Valley Open Space to reach the 2nd highest point in Marin County. From later winter through early summer the hills are verdant green and often covered in wildflowers. Bring plenty of water and a wide brimmed hat if it's a warm day as there is little shade, but this means the views are wide open and beautiful.
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Highest point on Big Rock Ridge Fire Road with panoramic views of the Bay, Marin county, and even across the East bay to Mt. Diablo and south to San Francisco. A short spur trail here leads to a point with slightly better views down over Skywalker Ranch and the Lucas Valley.
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Be careful on the descent, the pavement can get slippery. This is a great trail access spot for MTB and hiking.
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Highest point between Fairfax and San Geronimo, the saddle was originally cut for the train in the 19th century, later widened for the highway. Can be busy but has a wide bike lane.
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Short steep climb from the South, more gradual from the north, to an overlook of the San Geronimo valley.
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The San Geronimo area features several notable hills and ridges that offer diverse natural beauty and recreational opportunities. Key highlights include Mount Tamalpais Summits, the highest peak in the Marin Hills, and Big Rock Ridge, known for its panoramic views. Other significant areas include Mount Barnabe, San Geronimo Ridge, and Dickson Ridge.
For spectacular 360-degree views, consider hiking to the summit of Mount Barnabe, which offers vistas of West Marin, Tomales Bay, Mount Diablo, and Mount St. Helena. Big Rock Ridge also provides extensive panoramic views of the Bay, Marin County, and even across to Mount Diablo.
Yes, trails leading to the summit of Mount Barnabe can be steep, providing a challenging workout. The Big Rock Trail to ridge summit above Lucas Films Studio also involves significant elevation gain, making it a rewarding challenge for hikers and mountain bikers.
The region boasts diverse ecosystems. You'll find patches of old-growth redwoods, shaded fir and fern forests, open grassy ridgelines, and varied tree species like redwood, Douglas-fir, oak, and bay. San Geronimo Ridge, for instance, is home to a unique pygmy Sargent Cypress forest.
While specific 'family-friendly' categories aren't listed for all peaks, many trails in the region offer varied terrain. For easier hikes, you might explore options like the Cross Marin Trail to Kent Lake or the East Sylvestris, San Geronimo Ridge, and Hunt Camp Loop, which are listed as easy hikes in the area. You can find more details on these routes in the Easy hikes around San Geronimo guide.
Mount Barnabe hosts the historic Dickson Fire Lookout, which has been in service since 1935. Additionally, the saddle at White Hill Summit on Sir Francis Drake Boulevard was originally cut for a train in the 19th century before being widened for the highway.
The area is popular for hiking, mountain biking, and road cycling. You can find numerous trails and routes, such as the Bolinas and San Geronimo Ridge Loop for mountain biking, or the Hicks Valley Road Loop for road cycling. Explore more options in the MTB Trails around San Geronimo and Road Cycling Routes around San Geronimo guides.
Yes, Big Rock Ridge offers a short spur trail that leads to a point with slightly better views down over Skywalker Ranch and the Lucas Valley. The Big Rock Trail to ridge summit above Lucas Films Studio also provides a bird's-eye view of Skywalker Ranch.
The highest point in the Marin Hills is Mount Tamalpais Summits. Its West Peak, where a radar dome stands, is at about 2,576 feet (785 m).
San Geronimo Ridge is ideal for longer hikes or bike rides, offering a sense of remoteness with lush forests and varied ecosystems. It features fire roads and trails that traverse a scenic ridgeline, and you can find a unique pygmy Sargent Cypress forest there.
Yes, Moon Hill Summit - Nicasio Valley Road provides an overlook of the San Geronimo Valley.
From late winter through early summer, the hills are verdant green and often covered in wildflowers, making it a particularly beautiful time to visit. However, many trails offer enjoyable experiences year-round, with varied ecosystems providing interest in different seasons.


See even more amazing summits around San Geronimo with these guides: