Ruff Run California

The In-N-Out Burger Tough Mudder Challenge is a dynamic obstacle course event held at Bear Mountain Resort in Big Bear Lake, California. Scheduled for September 5–7, 2025, it features two main race distances: a 10K with over 20 obstacles and a 5K with more than 12 obstacles. The event emphasizes teamwork and endurance across muddy, challenging terrain.

Participants are welcomed at the Mudder Village Festival with In-N-Out’s signature Double-Double® meal. Proceeds support the Slave 2 Nothing Foundation, which combats substance abuse and human trafficking. The event fosters a spirited atmosphere, encouraging community and fundraising efforts alongside the physical challenge. Visit the organization's website for the most recent information.

Tough Mudder Big Bear, held at Bear Mountain in Big Bear Lake, California, is a challenging obstacle course event featuring customized 5K and 10K courses with 12+ and 20 obstacles respectively. The event emphasizes teamwork and offers epic mountain views, a secret obstacle menu, and exclusive co-branded swag. Participants earn unique finisher medals, shirts, and headbands, plus a celebratory Double-Double® meal from In-N-Out Burger at the Mudder Village Festival. Proceeds support the Slave 2 Nothing® Foundation, combating substance abuse and human trafficking. The event also offers spectator passes, VIP experiences, group packages, and volunteer opportunities, creating a vibrant and supportive atmosphere for all. Visit the organization's website for the most recent information.

The Angel Stadium Spartan Stadion Weekend, held at the iconic Angel Stadium of Anaheim in Orange County, California, features a thrilling 5K obstacle course race with 20 challenging obstacles. Participants experience a unique course that includes running up and down stadium bleachers, offering an up-close view of the home field of the Anaheim Angels. The event also includes a kids' race of 1 to 1.5 kilometers with obstacles, making it family-friendly. Racers can enjoy the vibrant atmosphere of this historic ballpark and explore nearby attractions like Laguna Beach after the race. The event encourages teamwork and offers special discounts for service members. Visit the organization's website for the most recent information.

The Temecula Spartan Event Weekend, held at Lake Elsinore Raceway in California, offers a thrilling obstacle course experience set against the scenic backdrop of Lake Elsinore, Southern California’s largest natural freshwater lake. Participants can choose from multiple race distances including the Sprint 5K with 20 obstacles, the Super 10K featuring 25 obstacles, and kids’ races ranging from 1 to 3 km. The course features rugged trails, rolling terrain, and stunning lakeside views, providing a challenging yet picturesque environment. The event also includes Hurricane Heat endurance challenges and a Trifecta Pass for those seeking to complete multiple races. Ideal for all skill levels, it promises a fun, adventurous weekend under mild SoCal sunshine. Visit the organization's website for the most recent information.

The SoCal Spartan Event Weekend, held at Lake Perris State Recreation Area in Perris, California, offers a challenging obstacle course race experience set in a scenic mountain-rimmed valley. Participants can choose from Sprint (5K with 20 obstacles), Super (10K with 25 obstacles), Beast (21K with 30 obstacles), and Kids Race (1-3K with obstacles). The course is described as flat and fast but demanding, providing a rigorous test of mind and body. The venue features well-maintained park facilities and camping grounds, making it ideal for teams and families. Located about 40 minutes south of San Bernardino, this event kicks off the Spartan racing season with a vibrant and supportive atmosphere. Visit the organization's website for the most recent information.

The Big Bear Spartan Trifecta Weekend, held at Big Bear Mountain Resort in California, is a challenging obstacle course event set at a high altitude of 8,200 feet. Participants face steep climbs and descents over 1,200 feet, making it one of North America's toughest Spartan courses. The weekend features three race distances: the Sprint (5K with 20 obstacles), the Super (10K with 25 obstacles), and the Beast (21K with 30 obstacles), allowing racers to complete the Trifecta challenge. The event also includes a kids' race and offers scenic views of Southern California. It is known for its extreme terrain and rewarding experience for endurance athletes. Visit the organization's website for the most recent information.