Logo

Diablo Trail Run

Clayton, United States • 7 Sep 2025

The Diablo Trail Run, set 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 both flat and mountainous courses that showcase stunning views of the San Francisco Bay Area. Participants can expect well-stocked aid stations, custom medals for finishers, and awards for top competitors in various categories. The event promotes sustainability by being cupless, encouraging runners to bring their own hydration containers. 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.
Trail runs nearby

Brazen New Year's Eve

Castro Valley - 18 mi from Clayton

The Brazen New Year's Eve event offers participants the chance to run a half marathon, 10K, or 5K at Lake Chabot in Castro Valley, California. This event is designed for runners of all levels, including hikers and walkers, making it a perfect way to close out the year with friends and fitness. Parti..

Brazen New Year's Day

Castro Valley - 18 mi from Clayton

The Brazen New Year's Day event offers a scenic and invigorating start to the new year with races at Lake Chabot in Castro Valley. Participants can choose from a half marathon, 10K, or 5K, making it a family-friendly occasion. The event encourages runners to kick off their resolutions and enjoy the ..

Coyote Hills Run

Fremont - 27 mi from Clayton

The Coyote Hills Run, organized by Brazen Racing, takes place at Coyote Hills Regional Park in Fremont, California, featuring a scenic running experience along the San Francisco Bay. Participants can choose from three race distances: a half marathon, a 10K, and a 5K, with courses designed to accommo..

Go Wild Lime Ridge 2 Hour

Walnut Creek - 7 mi from Clayton

The Go Wild! Lime Ridge 2 Hour event invites participants to explore the scenic Lime Ridge Open Space in Walnut Creek, CA. Teams of 1 to 5 will navigate using a custom map to locate up to 20 checkpoints within a two-hour timeframe. This adventure combines trail running and wilderness scrambling amid..

Bay Breeze - San Leandro

San Leandro - 19 mi from Clayton

The Bay Breeze event, taking place at San Leandro Marina Park, features a scenic half marathon, 10K, and 5K run along the picturesque San Francisco Bay. This race is designed for all levels of runners and walkers, offering a mostly flat course that is ideal for setting personal records. Participants..

Redtail Ridge

Castro Valley - 18 mi from Clayton

Redtail Ridge is a trail running event hosted by Inside Trail Racing, featuring distances of 10K, Half Marathon, 30K, and 50K. Set in the scenic Lake Chabot Regional Park in Castro Valley, CA, the race offers a mix of dirt trails and paved sections, making it suitable for both competitive runners an..