Diablo Trail Run
Clayton, United States • 7 Sep 2025
The Diablo Trail Run, held at Diablo State Park in Clayton, California, offers a variety of scenic trail running events on September 7, 2025. Participants can choose from distances including 4 miles, 10 miles, half marathon, marathon, and 50K, with a free Kid's Run also available. The course features breathtaking views of Mount Diablo and surrounding valleys, with the shorter courses being relatively flat and faster, while the longer events are mountainous and scenic. Runners enjoy well-marked trails, aid stations every few miles, and a cupless hydration system to reduce waste. Prizes include medals, shirts, and race credits for top finishers, making it a popular event for trail enthusiasts. Visit the organization's website for the most recent information.