Fee: $10/vehicle
About this park
Mount Diablo State Park near Clayton centers on a prominent peak that rises nearly 4,000 feet above the East Bay. Its position gives the summit some of the widest views in California, stretching across the Bay Area and, on clear days, to the Sierra Nevada. A summit visitor center and observation area offer telescopes and exhibits, and trails wind through oak woodlands, grassy hills and rocky ridges. Spring brings wildflowers, and hikers and cyclists enjoy the steep climbs and scenic drives. Entry is $10 per vehicle. Clear, cool days offer the best visibility from the top.
Mount Diablo State Park FAQ
Where is Mount Diablo State Park located?
Mount Diablo State Park is in Clayton, California, at 96 Mitchell Canyon Rd. GPS coordinates: 37.8816, -121.9142. Get directions.
Is there an entrance fee at Mount Diablo State Park?
$10/vehicle. Fees can change by season, so confirm with the park before you go.
How do I contact Mount Diablo State Park?
You can call (925) 837-2525 or email info@parks.ca.gov. The park office can confirm RV site availability, hookups, length limits and current conditions.
Are there RV campgrounds near Mount Diablo State Park?
Yes. The closest RV-friendly campgrounds listed on ParkedRV are:
- Coyote Point (58.7 mi, reservable)
- Oak Knoll Campground (63.9 mi, reservable)
- Acorn Campground (64.0 mi, reservable)
How current is this information about Mount Diablo State Park?
This listing was last updated on September 20, 2026. If something is out of date, let us know and we'll fix it.