Saturday, April 8, 2023
About the Event
Hosted by Brazen Racing, this fundraising run for Save Mount Diablo showcases just a fraction of Diablo’s natural beauty and helps Save Mount Diablo to preserve, defend, and restore more land for you, wildlife, and future generations to enjoy.
Diablo Trails Challenge has a run for everyone, from those hitting the trail for the first time to experienced ultra-runners, with a 5K, 10K, half marathon, and 50K. The 5K, 10K, half marathon, and 50K all begin and end at Castle Rock Recreation Area in Diablo Foothills Regional Park, Walnut Creek. All races are professionally timed. Runners receive medals after the race.
Thanks to all participants, volunteers, park rangers, ham radio volunteers, Contra Costa Sheriff’s search and rescue teams, and sponsors for making this run possible.