Mountain Tiger Diablo

Mountain Tiger Diablo is a 12+ mile loop straight up the toughest, best way to the Mount Diablo Summit and back down an equally steep and scenic descent.

We believe hard mountain runs that don't take the commitment of ultramarathons are the best. After launching Mountain Tiger Donner Summit in 2025, we're introducing our second race: Mountain Tiger Diablo, bringing the same rowdy spirit to the most badass mountain in the bay.

The 12 mile route is brutal, beautiful, relentless and exhilirating – all the things we love about raw mountain running.

Course Details

The 12+ mile course is the most direct route straight to the Mount Diablo summit (and back down) with 4,200 feet of climbing and descending. Runners will start from the Mitchell Canyon visitor area and climb 1700 feet in the first 2.5 miles by ascending Eagle Peak, then will continue straight up Bald Ridge to climb to the summit of Mount Diablo. From there, the descent is steep and quad-crushing, going down 4,000 feet in 6 miles to take you back to the finish line area at Mitchell Canyon. With a cutoff of 5:00 we welcome one and all.

Registration

Entry is $95 plus fees. Your entry includes transportation via group shuttle from the off-site parking area (a 5 minute bus ride) to the start line/finish line, and transportation after the race back to your car, a necessary step to accommodate the limited parking lot at the race area.

Runners will also receive an entry to the post-race raffle, and a unique finisher's item.

NO REFUNDS / YES 2027 ROLLOVERS (UNTIL SEPTEMBER 1).

For more details, visit mountaintiger.com

Questions

If you have questions about the race please email info@mountaintiger.com.

Event's current local time: 6:42 AM PT