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Diablo Summit Stomp

Name: Diablo Summit Stomp
Start: 2025-10-18
End: 2025-10-18
Location: Walnut Creek

Walnut Creek, United States • 18 Oct 2025

The Diablo Summit Stomp is a trail running event held in Walnut Creek, California, featuring distances of 30K, half marathon, 10K, and 5K. The courses traverse dirt trails starting from Castle Rock Park and extend into Mount Diablo State Park, with the 30K reaching the summit of Mount Diablo. The event welcomes both first-time trail runners and experienced athletes, including walkers and hikers.

Runners experience varied terrain with some hills, mud, and creek crossings depending on weather. The race offers well-marked courses, aid stations with refreshments, and age group awards. It emphasizes a friendly atmosphere and encourages carrying hydration for safety. Visit the organization's website for the most recent information.

United States California Walnut Creek

Race information

Website

30 km

30k

13 mi

Half Marathon

10 km

10k

5 km

Visit the organization's website for the most recent information.

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