Diablo Trails Challenge

A Run for Everyone: 5K, 10K, Half Marathon, 50K
Saturday, April 14th, 2018
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, 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.

Race Information
For race and course details, please visit Brazen Racing’s website.

Registration for the 2018 Diablo Trails Challenge is now open.



Assistance League of Diablo Valley’s Thrift Shop The Crayon Initiative Golf Tournament – 2018 The Ambrose-Pittsburg Lions Club Annual Spring Carnival Pleasant Hill Garden Study Club Conservation Icons Speaker Series Join Our New Program – Giving in Gratitude