Diablo Trail Run

The Diablo Trail Run, scheduled for September 7, 2025, in Clayton, California, offers a variety of race distances including 4 miles, 10 miles, a half marathon, a marathon, and a 50K, along with a free Kid's Run for children aged 6 and under. The event takes place in the scenic Mount Diablo State Park, featuring a mix of flat and mountainous terrain. Participants can expect well-marked courses, fully stocked aid stations, and a cupless hydration system to minimize waste.

All finishers receive medals, and awards are given to top finishers in various categories. Visit the organization's website for the most recent information.