Toughest Mudder Los Angeles - San Bernardino, California - Obstacle & Mud Runs

The Toughest Mudder Los Angeles is a Obstacle & Mud Runs race in San Bernardino, California consisting of a 12 Hours (Long).

Toughest Mudder is 12 full hours of extreme teamwork, stamina and mental grit testing, action from 8pm Saturday to 8am Sunday. Haul through as many 5 mile laps as you can while attacking 20 of the best obstacles in the industry. Tackle this beast as an individual or team up with your friends and be part of our Team Relay division.


2 & 4 Person Team Relay was put into place to open up another division within Toughest Mudder and bring more participants into the Race Series Community. Teaming up with your best friends, family members, or strangers are the best way to conquer this event and help push you towards the ultimate goal of World's Toughest Mudder.


Think you're the Toughest Mudder on the West Coast? Prove it at Glen Helen Raceway, only an hour from the center of Los Angeles, this venue packed with rolling hills and scenic vistas will have your thighs burning and your head on a swivel...you never know who you might see out here. Gear up, push past your limits, and take your shot at podium glory.