Diablo Foothills Regional Park

Park Info

1700 Castle Rock Road, Walnut Creek, CA 94598
(Northern Staging Area)

Parking: No fee
Dogs: No fee

Park Hours
Nov. 1-Feb. 28: 7:30am-7pm
Mar. 1-May 31: 7:30am-8pm
Jun. 1-Oct. 31: 7:30am-9pm

Phone Numbers
Toll Free: 888-EBPARKS (888-327-2757), option 3, extension 4526

> Trail Map
> PDF Map
> Google Map:
      Northern Staging Area
> Google Map:
      Southern Staging Area

Diablo Foothills Interpretive Park

About The Park

Diablo Foothills is an imposing gateway to the beautiful parklands of Mt Diablo State Park and Walnut Creek Open Space. The Foothills 1,060 acres are valued for their striking geologic formations, their sweeping panoramas of the San Francisco Bay Region and the rural quality of the adjacent rolling grasslands. Castle Rock Recreation Area is located within Diablo Foothills park.

Annual Closure Notice

The rock formations in Pine Canyon are currently closed effective February 1, reopening August 1, to protect nesting peregrine falcons. This protected species is highly territorial and sensitive to disturbance, especially during nesting season. Although the rock formations, known as Castle Rock, are in Mt. Diablo State Park, most visitors reach them through Diablo Foothills Regional Park. No other portions of the park are affected. We appreciate the public’s cooperation in helping us protect these species birds. For further information, please contact park staff at (510) 544-3085.

Wildflower Photo Guide

Adjacent to Diablo Foothills is Castle Rock Recreation Area located in a scenic canyon along Pine Creek. The area is dominated by oak woodlands and prominent sandstone formations. Castle Rock has historically specialized in preparing picnic events for large groups of 300 or more people.

Park Features

Besides panoramic views of the mountain and its surroundings, Diablo Foothills' 1,060 acres contain interesting geologic features, beautiful wildflowers in season, and a variety of bird and animal life.

Vegetation varies from grassland and oak savannah on the hills to riparian and oak woodland in the valley. Pine Creek flows through Pine Canyon and is within the eastern portion of the Walnut Creek watershed, which drains 150 square miles of central Contra Costa County into San Francisco Bay.

Diverse habitat types support an equally diverse array of wildlife, including mule deer, bobcats, coyote, grey fox, long-tailed weasels, raccoons, gophers, rabbits and ground squirrels. Birds such as red-winged blackbirds, northern mockingbirds, scrub jay, California quail, and brown towhees use the park for nesting and foraging habitat. Rock outcrops shelter garter and gopher snakes, western fence lizards, southern alligator lizards, tree frogs, and California salamanders. The perennial pools of water in Pine Creek ensure the survival of green sunfish, mosquitofish and largemouth bass.

Park Activities

Diablo Foothills offers abundant open land for horseback riding, hiking, bicycling and nature study. There are no developed facilities in the park.

ADA accessibility iconPark Accessibility

The pathways within Castle Rock Recreation Area are wheelchair accessible. Other wheelchair accessible facilities in Castle Rock Recreation Area include a restroom and a drinking fountain, and an accessible lift into the pool.

To Reach The Park

  • Northern Staging Area: Exit I-680 at Ygnacio Valley Road in Walnut Creek and drive east. After about three miles turn right on Walnut Avenue. After about two miles turn right on Oak Grove Road, then bear right onto Castle Rock Road and follow it to the Orchard Staging Area on the right. Limited parking is available at the end of Castle Rock Road.
  • Southern Staging Area: Exit I-680 at Livorna Road. Head east about three miles to the Livorna Staging area located just west of Stonegate Drive in Alamo.

Trail Map

Click the map image below to see an enlarged version.

Diablo Foothills Regional Park Trail Map


Friday, December 31, 2021

10:30 AM  -  12:00 PM
Last Hike of the Year