Mountain peaks around Clayton, California, are primarily found within Mount Diablo State Park. This region is characterized by its prominent peaks that offer expansive views of the surrounding low hills and valleys. The area provides diverse habitats and an extensive trail system for outdoor activities. Its unique geography allows for far-reaching vistas on clear days.
Last updated: June 24, 2026
Highlight β’ Summit
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Highlight β’ Summit
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Highlight (Segment) β’ Trail
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Mount Diablo, is the Bay Area second-highest peak at 1173m (3849ft). The challenging climb features constantly fluctuating gradients averaging 8%, with tough sections up to 18% and a brutal 23% finish in the last 200m. The equally demanding descent requires good bike handling due to tight corners, potholes, and strong winds. The road to the top is open daily from 8 AM till sunset.
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One of the fiercest peaks in the Bay. Always worth the effort. Itβs often much cooler on the summit than the rest of the trails β there is a water spigot up there to fill up bottles. Also a store is open at some times. Donβt bank on it.
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Twin Peaks in Mount Diablo State Park, not to be confused with the famous San Francisco landmarks, is a pair of prominent summits providing breathtaking vistas of the park's diverse landscapes.
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Mount Diablo is 3,849 feet in elevation and is visible from most of the San Francisco Bay Area.
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This prominent summit offers excellent views of the canyon below, with a good look at the Clayton Quarry. The wildflowers are beautiful in the spring and summer. It is a great spot to spend some time just enjoying the scenery.
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This trail provides access to the south face of Mount Diablo's summit. To the right, you will see the Mary Bowerman Trail that turns back into the Summit Trail if you want to reach the actual summit area. There is a restroom building and a summit building with an observation deck on the roof.
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Mount Diablo is one of the highest peaks in the Bay area. The summit offers outstanding views that you will remember for a long time.
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The most prominent peaks around Clayton, California, are primarily located within Mount Diablo State Park. Mount Diablo Summit is the highest, offering expansive views. Other notable peaks include Eagle Peak, Twin Peaks, and Black Point Summit, all providing unique vistas of the surrounding landscape.
From Mount Diablo Summit, you can expect remarkably expansive views. On clear days, vistas can extend over 100 miles, sometimes even up to 200 miles, encompassing the Bay Area, Santa Cruz Mountains, Central Valley, and even the snow-capped Sierra Nevadas in the distance. The summit is accessible by car, and there's an observation deck for panoramic viewing.
Yes, Mount Diablo State Park offers trails suitable for families. While some routes are challenging, there are options for various skill levels. The park is popular for hiking, bicycling, and equestrian activities. For specific easy, family-friendly trails, you can explore the Hiking around Clayton guide for routes like the City of Clayton Open Space loop.
Beyond the peaks themselves, you can discover diverse habitats, unique rock formations like the 'wind caves,' and seasonal wildflowers, especially around Black Point Summit in spring and summer. The region is characterized by its prominent peaks, deep canyons, and the expansive views of the surrounding low hills and valleys.
The area around Clayton offers a variety of outdoor activities. You can find extensive trail systems for hiking, running, and cycling. Mount Diablo State Park is particularly popular for these activities, with trails ranging from easy to difficult.
Yes, for experienced hikers seeking a challenge, Mount Diablo State Park offers strenuous options. For example, an 11.3-mile loop trail connects Mount Olympia and North Peak, involving a 3,000-foot elevation gain. The Hiking around Clayton guide also lists difficult routes like the Four Peaks loop.
Clear days, especially after a winter storm, often provide the most expansive views from Mount Diablo. While the park is accessible year-round, these conditions can offer the best chance to see up to 200 miles in the distance. Spring and summer also bring wildflowers, adding to the scenic beauty.
Yes, you can drive to the summit of Mount Diablo Summit. This makes it accessible for those who prefer not to hike the entire way, allowing visitors to enjoy the panoramic views from the observation deck at the top.
Eagle Peak, a side peak in Mount Diablo State Park, offers great views of the Bay Area's most visible volcano peak and the areas below. It's an intermediate-level summit that provides a different perspective of the region compared to the main Mount Diablo Summit.
The Summit Trail provides direct access to the south face of Mount Diablo's summit. This trail leads to an observation deck and a summit building, offering panoramic views and facilities.
Yes, there are several running trails available. The Running Trails around Clayton guide features routes such as the Mount Diablo State Park loop via Mitchell Rock & Twin Peaks, and the Diablo Valley Overlook to Mount Diablo, catering to various difficulty levels.
Twin Peaks in Mount Diablo State Park are a pair of prominent summits that offer breathtaking vistas of the park's diverse landscapes. They provide an excellent viewpoint to appreciate the volcanic terrain of Mount Diablo.


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