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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 at the Orchard Staging Area, just before the park entrance.  There is a short walk (about 1/4 mile) from the park entrance to the start/finish area.  While we expect all participants to be able to fit in that lot, parking is limited, so if you can carpool (even if that means just parking a few miles away and only bringing one vehicle to the Orchard lot, that will help us.


Join us  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.