Castle Rock Regional Recreation Area 1700 Castle Rock Road, Walnut Creek, CA 94598

Castle Rock Regional Recreation Area is a picturesque park and tourist attraction located at 1700 Castle Rock Road in Walnut Creek, California, United States. The park offers various amenities such as basketball courts, horseshoe pits, a volleyball court, a softball field, and picnic sites that are open to the public daily.

The park is dominated by oak woodlands and sandstone formations, creating a scenic canyon along Pine Creek. The Castle Rock area is part of Diablo Foothills Regional Park and is bordered by Mount Diablo State Park and Walnut Creek Open Space, providing access to over 18,000 acres of public lands.

Visitors can enjoy the pool complex which features a 30 feet by 70 feet swimming pool, deck areas, and a bathhouse that is fully accessible to individuals with disabilities. Swimming is allowed only when lifeguards are on duty, and there is a pool access fee to enter the swim area.

The park also offers reservable group picnic areas for events with 300 or more people. Catering services may be available, and reservations can be made by calling 1-888-EBPARKS. The park is easily accessible from I-680 in Walnut Creek, and there is informal parking near the park entrance at the end of Castle Rock Road.

Please note that the Castle Rock area of Mount Diablo State Park is closed annually from February 1st to August 1st for the protection of the American peregrine falcon. Public WiFi is not available at the park, but visitors can check AT&T, T-Mobile, and Verizon coverage. Additionally, the park has specific hours of operation for parking lots and swimming facilities, so it is recommended to check the website for current information.