Tough Mudder - Big Bear

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.

The Temecula Spartan Event Weekend, held at Lake Elsinore Raceway in California, offers a scenic and challenging obstacle course experience along the shores of Lake Elsinore. Participants can choose from a Sprint 5K with 20 obstacles, a Super 10K featuring 25 obstacles, and kids' races ranging from 1 to 3 kilometers with obstacles. The course showcases rugged trails, rolling terrain, and stunning water views under mild Southern California September weather. Additional challenges include Hurricane Heat endurance events lasting 4, 12, or 24 hours. This event is ideal for all skill levels seeking a thrilling outdoor adventure with team options and family-friendly activities. Visit the organization's website for the most recent information.

Ruff Run California is an annual obstacle run held in Phelan, CA, set in the scenic high desert at 4,200 feet elevation. The event features a 4ishK course with over 20 obstacles that challenge participants and their dogs, testing training, teamwork, and strategy through mud, water, and mental challenges. The 2025 race includes a new course section and custom jerseys for all participants. Besides the competitive 4k wave, there are also a 4ishK fun run and a 1k fun walk/run. The event fosters a lively atmosphere with an after-party featuring music, games, and vendors, making it a fun day for both runners and their pups. 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 with scenic mountain views. Participants can choose from multiple race distances: the Sprint (5K with 20 obstacles), Super (10K with 25 obstacles), Beast (21K with 30 obstacles), and a Kids Race (1-3K with obstacles). The course is described as flat and fast but demanding, set in a well-maintained park with camping facilities. The event fosters a competitive yet fun atmosphere suitable for individuals, teams, and families, making it a memorable physical challenge in Southern California’s rugged wilderness. 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, testing endurance and strength across three race distances: the 5K Sprint with 20 obstacles, the 10K Super with 25 obstacles, and the 21K Beast featuring 30 obstacles. This extreme course offers expansive Southern California views and the chance to earn a Trifecta by completing all three races in one weekend. The event also includes a kids' race and promotes team participation, with amenities like bag check and parking included. Visit the organization's website for the most recent information.