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, Walnut Creek, CA, United States. The event is held on trails around Mount Diablo and offers multiple race distances.
Distances offered:
- 50K
- Half Marathon
- Hiker Half Marathon
- 10K
- 5K
A portion of all entry fees is designated for Save Mount Diablo. The organizer notes that Save Mount Diablo has worked to preserve and increase open space on and around Mount Diablo, growing protected land from 6,788 acres to over 100,000 acres.
Registration includes several pricing tiers that vary by event and by registration period. Additional participation options listed for the event include a remote runner category and a purchasable BBQ lunch plate. The event page and materials provide registration details, pricing schedules, and information about fundraising for Save Mount Diablo. Visit the organization's website for the most recent information.
