Mount Diablo State Park’s Juniper Campground is a convenient option for RV travelers who want proximity to summit trails and picnic areas, with potable water and restroom facilities. For rigs needing hookups and on-site services, the local fairgrounds frequently offer RV sites with hookups and nearby fuel and supply options during events. Both choices place you within a short drive of Clayton’s services and dining, making it easy to reprovision or run errands between outdoor days. Reserve ahead, especially on weekends, to secure pull-through or larger sites suitable for Class C rigs.