Discover the beauty of Mount Diablo!
All courses are on trails. While there are some hills, this event, like all Brazen Racing runs, is very friendly to first-time trail runners and experienced runners alike. Depending on the weather, all distances may include mud and creek crossings!
Walkers/hikers are welcome in all distances.
How to enter the Diablo Summit Stomp
- Run 30km
- Run 13.1mi
- Run 10km
- Run 5km
Diablo Summit Stomp routes
The longer you go, the more you see and experience! Courses are all on dirt trails, heading out from Castle Rock Park in Walnut Creek, heading into Mount Diablo State Park – all the way to the summit for the 30K.
Each course will be marked with colored ribbons, signs, and flour. Runners unfamiliar with the courses should carry a copy of the course map to ensure they stay on course.
Questions & answers
Get answers from our team or a member of our dedicated community.
Diablo Summit Stomp weather forecast
Partly cloudy throughout the day.
Meet the organizer
Diablo Summit Stomp reviews
Reasons people recommend this event
Good for beginners
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