Diablo Summit Stomp 2025

Event Details

Experience the Diablo Summit Stomp 2025 with a choice of 30K, 1/2 Marathon, 10K, and 5K distances.

Date and Time

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)

Location

1700 Castle Rock Road, Walnut Creek, CA, United States

Courses

All courses are on trails, making them friendly to both first-time and experienced trail runners. Walkers and hikers are welcome in all distances.

Awards

Age group awards will be given to the top 3 finishers in 5-year categories.

Registration Fees

Prices are inclusive of mandatory charges:

• 5K: $76.98 Extra early, $82.31 Early, $87.65 Regular
• 10K: $86.58 Extra early, $91.92 Early, $97.26 Regular
• Half Marathon: $105.80 Extra early, $111.14 Early, $116.47 Regular
• 30K: $116.47 Extra early, $121.81 Early, $127.15 Regular
• Remote Runner: $50.29 Now registering, $55.63 Early

Contact Information

For inquiries, contact the Race Director via email at [email protected]