Diablo Trails Challenge
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Diablo Trails Challenge 2027
The Diablo Trails Challenge takes place on April 3, 2027, at 1700 Castle Rock Road in Walnut Creek, California. The event runs on trails associated with Mount Diablo and offers multiple distance options and event formats on the same day.
Available distances and options:
- 50K
- Half Marathon
- Hiker Half Marathon
- 10K
- 5K
- Remote runner option
- BBQ lunch ticket option
Registration fees vary by distance and change as the event approaches; listed prices include mandatory charges and fees. The event page shows tiered pricing for each distance and for the remote runner and BBQ ticket options.
A portion of all entry fees is directed to Save Mount Diablo. The nonprofit has worked for over 40 years to preserve and increase open space on and around Mount Diablo, expanding conserved lands from 6,788 acres to more than 100,000 acres.
Additional event details such as start sequences, race day schedule, and support services are published by the organizer. Contact information and the event website are provided on the organizer page. Visit the organization's website for the most recent information.
