Diablo Trails Challenge 2025
- Trail Run
- 50 km
- Half Marathon
- 10k
- 5k
Experience the Diablo Summit Stomp 2025 with a choice of 30K, 1/2 Marathon, 10K, and 5K distances.
Saturday, October 18, 2025
8:15 AM PDT - 30K Start
8:30 AM PDT - Half Marathon Start
9:00 AM PDT - 10K Start
9:15 AM PDT - 5K Start
7:45 AM - Early Half Start (for those walking the half marathon)
1700 Castle Rock Road, Walnut Creek, CA, United States
All courses are on trails, making them friendly to both first-time and experienced trail runners. Walkers and hikers are welcome in all distances.
Age group awards will be given to the top 3 finishers in 5-year categories.
Prices are inclusive of mandatory charges:
For inquiries, contact the Race Director via email at [email protected]
5K Registration | $76.98 | See |
10K Registration | $86.58 | See |
Half Marathon Registration | $116.47 | See |
30K Registration | $116.47 | See |
Remote Runner Registration | $50.29 | See |
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