Conquer high-altitude trails in California's rugged mountain terrain.

The Big Bear Grizzly Ultra Endurance Race is a challenging 100k mountain bike race held in the breathtaking elevations of Big Bear Lake, California. As a stop on the National Ultra Endurance (NUE) MTB Series, this event attracts elite and ambitious riders to tackle a technical course featuring demanding climbs, scenic single and double track, and the hypoxic challenges presented by high-altitude riding. Racers will experience stunning vistas and test their limits in a race renowned for its rugged terrain and spirited competition.

The course features a 100k loop through rugged single- and double-track trails in the San Bernardino Mountains, climbing from the city of Big Bear Lake to elevations as high as 8,500 feet, rewarding riders with both technical descents and expansive mountain views.

• Part of the National Ultra Endurance (NUE) MTB Series
• Challenging technical course at high elevation
• Breathtaking scenic vistas throughout the route
• Special veteran recovery event on race weekend
• International reputation for toughness and beauty