Hiking and wildlife viewing draw groups to Mount Diablo State Park, where trails cross oak woodland and grassland with open sightlines toward the Central Valley and Sierra Nevada. Group Campsites accommodates larger parties with picnic tables, fire rings, and toilet facilities, though RVs are capped at 20 feet. Rates run $65 to $165 per night depending on group size. Juniper Campground — Mount Diablo State Park sits less than a mile north for groups needing overflow or additional space. Pets are welcome. Reserve well ahead, especially for spring and fall weekends when demand across camp sites around Mount Diablo State Park runs high.
Description
Group Campsites
RV Road Trip Guides
Map & DirectionsGroup Campsites is located in California near Diablo
Address
96 Mitchell Canyon Rd
Clayton, CA 94517
Coordinates
37.867565 N
121.936076 W
Connectivity
- T-Mobile5GGood Coverage
- Verizon5GExcellent CoverageVerified by 1 userLast on 2/2/26
- AT&T5GGood Coverage
Connectivity
- T-Mobile5GGood Coverage
- Verizon5GExcellent CoverageVerified by 1 userLast on 2/2/26
- AT&T5GGood Coverage
Access
Features
For Campers
- Picnic Table
- Reservable
- Toilets
- Pets
- Fires
Drive Time
- 57 min from Vallejo, CA
- 1 hr 10 min from Napa, CA
- 1 hr 16 min from San Jose, CA
- 1 hr 29 min from Stockton, CA



