In-N-Out Tough Mudder Challenge
Big Bear Lake, United States • 5-7 Sep 2025
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 race distances: a 10K with over 20 obstacles and a 5K with more than 12 obstacles. The event fosters a spirited atmosphere of teamwork and endurance, with participants navigating muddy, challenging terrain.
Proceeds support the Slave 2 Nothing Foundation, which combats substance abuse and human trafficking. Participants enjoy a festive Mudder Village with In-N-Out’s signature Double-Double® meal at the finish line. Spectator passes and VIP experiences are also available, making it a community-focused weekend of fitness and philanthropy. Visit the organization's website for the most recent information.
Always visit the organization's website for the most recent information!
Race information
Mud & Obstacle runs nearby
Tough Mudder - Big Bear
Big Bear Lake • 5-7 Sep 2025
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, hosted in partnership with In-N-Out Burger, offers participants epic views, teamwork-driven challenges, and exclusive co-branded swag. Proceeds benefit the Slave 2 Nothing® Foundation, supporting the fight against substance abuse and human trafficking. After completing the course, participants enjoy a Mudder Village Festival with In-N-Out’s iconic Double-Double® meal. The event also includes finisher medals, shirts, and headbands, plus options for spectators, VIP experiences, and group packages. Visit the organization's website for the most recent information.
Temecula Spartan Event Weekend
Lake Elsinore - 75 km from Big Bear Lake • 26-28 Sep 2025
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.
Ruff Run California
Phelan - 64 km from Big Bear Lake • 18 Oct 2025
Ruff Run California 2025 is an exciting annual obstacle run taking place in Phelan, California, designed for participants and their dogs. The event features over 20 obstacles that challenge both physical endurance and teamwork between participants and their pups. The course includes a 4ishK run filled with mud, water, and strategic challenges, making it a fun and engaging experience. This year, participants will receive custom jerseys to commemorate the event. The day will also include an after-party with music, games, and vendors, set against the beautiful backdrop of the high desert at 4200 feet above sea level. Visit the organization's website for the most recent information.
Socal Spartan Event Weekend
Perris - 59 km from Big Bear Lake • 24-25 Jan 2026
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.
Big Bear Spartan Trifecta Weekend
Big Bear Lake • 16-17 May 2026
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.