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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.

United States California Clayton

Race information

Website
50 km
8000 m+
50k
26 mi
6760 m+
Marathon
13 mi
3420 m+
Half Marathon
10 mi
2420 m+
10 Mi
4 mi
400 m+
4 Mi
Kid's Run (6yo & Younger, 50yd Dash) - Free!
Visit the organization's website for the most recent information.
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