Diablo Summit Stomp

OCT

17

2026

A trail running event in Walnut Creek on October 17, 2026, offering 30K, half marathon, 10K, 5K and a remote option; courses include some hills and walkers are welcome.

Sat 17 Oct 2026

Walnut Creek, California

Website

30 kilometers Half Marathon 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Diablo Summit Stomp 2026

Diablo Summit Stomp 2026 takes place on October 17, 2026, at 1700 Castle Rock Road, Walnut Creek, CA, United States. The event offers multiple trail distances and a remote runner option for participants who cannot attend in person.

All courses are on trails and include some hilly sections. The organizer notes the courses are approachable for first-time trail runners as well as experienced runners. Walkers and hikers are welcome to use any distance.

Distances available:

30K
Half Marathon
10K
5K
Remote Runner

Age group awards are given to the top three finishers in five-year age categories, with smaller categories used for younger ages. Registration is available for each distance with tiered pricing that changes by date. Visit the organization's website for the most recent information.

30 km

30k

Half Marathon

10 km

10k

5 km