Diablo Summit Stomp

The Diablo Summit Stomp is a trail running event held in Walnut Creek, California, featuring distances of 30K, half marathon, 10K, and 5K. All 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, with walkers and hikers allowed in all distances.

The courses include some hills and may feature mud and creek crossings depending on weather conditions. Aid stations provide water, sports drinks, and snacks, and runners are encouraged to carry hydration. The race offers age group awards and a friendly, scenic atmosphere. Visit the organization's website for the most recent information.