Mountain Tiger Diablo

OCT

10

2026

A 12.4 mile loop up to the Mount Diablo summit and back with about 4,000 feet of climbing and descending. The race starts and finishes at Mitchell Canyon and includes shuttle service, a post race raffle and a finisher item.

Sat 10 Oct 2026

Clayton, California

Website

12 miles

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Mountain Tiger Diablo

Mountain Tiger Diablo is a mountain running race held on October 10, 2026 in Clayton, CA. The event is a 12.4 mile loop that goes straight to the Mount Diablo summit and returns to the Mitchell Canyon visitor area.

The course gains and loses about 4,000 feet of elevation. Runners climb 1,700 feet in the first 2.5 miles via Eagle Peak, then continue up Bald Ridge Trail to the summit. The return is a steep descent of about 4,000 feet over roughly 6 miles via Prospector's Gap and Back Creek Trail. The course is a loop with a short spur on Summit Trail. A five hour cutoff applies.

Entry includes group shuttle transportation between an off site parking area and the start and finish area to address limited parking at Mitchell Canyon. Entries also include one post race raffle entry and a unique finisher item. The event states no refunds and offers 2027 rollovers until September 1. Registration closes on Wednesday, October 7 at 11:59 PM PT. Entry is listed as $95 plus fees. Visit the organization's website for the most recent information.

12 mi

12 Miler