Diablo Trail Run

Diablo Trail Run takes place at Mount Diablo State Park, Mitchell Canyon Trailhead, Clayton, CA. The race offers multiple distances: 4 miles, 10 miles, half marathon, marathon, 50K, and a kids’ run. The 4-mile loop is relatively flat and fast, while the longer races are mountainous and highly scenic, with views of the San Francisco Bay Area.

The course is well marked with color-coded ribbons and polka-dot flags to guide turns; aid stations are stocked every 3-5 miles, and the event is cupless. Runners receive shirts and medals; top finishers earn rewards and race credits. Elevation gains vary by distance. Visit the organization's website for the most recent information.