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 free but limited, so please carpool if at all possible! The main lot is close to the park entrance. Once that lot is full, overflow parking will be at North Gate High School (425 Castle Rock Road, Walnut Creek). Shuttles will be available to and from the school from 7:30 until 1:30).