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The start and finish for all race distances will be at Castle Rock Recreation Area in Diablo Foothills in Walnut Creek (1700 Castle Rock Road, Walnut Creek). For custom directions, click on "View Larger Map" and then click on "Get Directions".


Parking will be limited, so please carpool if at all possible! The main lot will be the Orchard Staging Area, just before the park entrance. After that lot is full, overflow parking will be at North Gate High School at 425 Castle Rock Rd, Walnut Creek (shuttles will be provided). There is a short walk (about 1/4 mile) from the park entrance to the start/finish area.


Join us on November 7, 2020 for our epic 5k, 10k, half marathon or 30K trail runs on Mount Diablo!


Thank you to our race sponsors, through their contributions, our sponsors help keep entry costs down and expose our runners their outstanding products and services. Learn more about becoming a sponsor.