Juniper Campground at Mount Diablo State Park offers vehicle-accessible sites nestled in oak woodlands, with level parking areas that simplify setup when arriving from Clayton. Live Oak Campground nearby provides similar wooded settings with close access to summit trails and daylight parking for tow vehicles. Del Valle Regional Park features a reservoir setting with larger sites and lakeside views, and several spots can accommodate a fifth wheel with easy access to boat ramps and day-use areas. All three locations are within a short drive of Clayton and offer the pull-through options, scenic settings, and conveniences that make unhitching for day trips convenient.