Logo

Diablo Summit Challenge

Clayton, United States • 21 Mar 2026

Diablo Summit Challenge

The Diablo Summit Challenge is a trail running event organized by the Nomadic Adventure Club. Held in Clayton, California, the event features a single distance for participants to navigate within the regional landscape. The course begins at 96 Mitchell Canyon Rd, a location situated within the natural terrain of the area.

Participants can register for the following distance:

  • 22.5 km trail run

The event is scheduled for March 2026, and registration remains open until the day before the run. The Nomadic Adventure Club uses this event to help support free community initiatives through optional donations. The course takes runners through the local environment of Clayton, utilizing the trails near Mitchell Canyon. Registration is managed online, and there are no specific qualification requirements mentioned for entry. Visit the organization's website for the most recent information.

United States California Clayton

Race information

Website Registration
23 km
22.5k
Visit the organization's website for the most recent information.
Trail runs nearby

Redwood (Spring) Trail Run

Oakland

...

A trail event in Oakland through Redwood Regional Park offering distances from a kids 50 yd dash to a 50K. Marked loops, aid stations every 5 to 6 miles, cupless event.

Western Pacific Marathon

Fremont

Run a flat and fast course on the historic Western Pacific Trail in Fremont. Choose from a half marathon, 10K, or 5K starting at Quarry Lakes. The event is open to runners and walkers of all levels.

Diablo Trails Challenge

Walnut Creek

The Diablo Trails Challenge offers four trail distances on Mount Diablo. A portion of entry fees supports the conservation work of Save Mount Diablo. The half marathon is part of the challenging Brazen Ultra Half Series.

Romancing the Island Half Marathon

Tiburon

Run a scenic, hilly loop around Angel Island with views of the Golden Gate Bridge and San Francisco Bay. The event includes a half marathon and a 10K, with ferry transportation from Tiburon included in the entry fee. Participation is limite..