Diablo Summit Stomp

Diablo Summit Stomp is a Brazen Racing trail race in Walnut Creek, California, starting at Castle Rock Park and venturing into Mount Diablo State Park toward the summit. Runners can choose from 30K, half marathon, 10K, or 5K, all on dirt trails with hills and potential mud or creek crossings depending on the weather. The course is well-marked with ribbons, signs, and flour, and participants can download GPX files and view elevation charts.

The event welcomes walkers and emphasizes accessibility and a friendly atmosphere for both beginners and seasoned runners. Notable features include an El Diablo mid-race option for 30K and cupless water stations. Visit the organization's website for the most recent information.