California Mud Run & Obstacle Race Calendar 2025-2026

The DEKA ATLAS: Joe Bala Fitness will take place in Newark on Saturday 1 March 2025.

The DEKA MILE: Pinnacle Fitness will take place in Fairfield on Sunday 16 March 2025.

The Los Angeles Spartan Hurricane Heat will take place in San Bernardino on Saturday 5 April 2025.

The San Jose Spartan Trifecta Weekend, taking place at Woodward Reservoir Regional Park, offers a thrilling experience for obstacle course racing enthusiasts. Participants can choose from various race distances, including the Sprint (5K), Super (10K), Beast (21K), and Ultra (50K), each featuring a challenging number of obstacles. Additionally, there is a Kids Race for younger participants. The event encourages camaraderie and personal achievement, making it ideal for both individuals and teams. With a beautiful venue spanning over 3,700 acres, this weekend promises an exciting and transformative experience for all racers. Visit the organization's website for the most recent information.

Tough Mudder Los Angeles is set to take place on April 5 and 6, 2025, at Glen Helen Raceway in San Bernardino. This challenging obstacle course event features over 20 unique obstacles designed to test participants' strength, endurance, and teamwork. Participants can choose from various race formats, including a 15+ kilometer course and a shorter 5-8 kilometer option.

Each finisher will receive a medal, a finisher shirt, and a celebratory drink. The event also offers opportunities for spectators to enjoy the Mudder Village Festival, featuring live entertainment and local food. Registration is available online, with group packages and volunteer options offered. Visit the organization's website for the most recent information.

The Stadion Spartan Weekend at Dodger Stadium in Los Angeles offers an exhilarating 5K obstacle course featuring 20 challenging obstacles. Participants will navigate through the historic ballpark, tackling bleachers and various physical challenges. This event is designed for both first-time racers and families, with a special kids' race ranging from 1 to 1.5 km. Located conveniently near LAX, the event promises a fun-filled weekend for athletes and spectators alike, making it an ideal destination for those seeking adventure and camaraderie in the heart of Los Angeles. Visit the organization's website for the most recent information.

The San Diego Spartan Event Weekend, taking place on April 12-13, 2025, at Pala Fox Raceway, features a thrilling series of obstacle course races. Participants can choose from a 5K Sprint with 20 obstacles, a 10K Super race with 25 obstacles, and a Kids Race ranging from 1-3 km. Set against the beautiful backdrop of the Pacific Ocean, the event challenges competitors with various physical and mental obstacles, including mud pits and rope climbs. This event is part of the Honor Series, celebrating those who serve and protect their communities. Finishers will receive exclusive medals and can enjoy a festival party post-race. Visit the organization's website for the most recent information.

The 2025 SoCal DEKA FIT event will take place at the Anaheim Convention Center, offering participants a unique fitness challenge that combines endurance, strength, and mental toughness. Athletes will navigate through 10 dynamic fitness zones over a distance of 5 kilometers. This all-levels hybrid fitness race promotes community involvement, featuring an Athlete Judge Program to ensure a professionally judged experience. Participants can expect awards and recognition for their achievements, making it a celebratory event for fitness enthusiasts. The event emphasizes inclusivity and encourages everyone to join in the fitness movement. Visit the organization's website for the most recent information.

Mud Factor - Fresno is an exciting annual 5K mud run taking place at Hobb's Grove in Sanger, California. This event is designed for participants of all ages, featuring both adult and KIDZ family waves, making it a fun-filled day for families and friends. Participants can expect a challenging course with various obstacles, ensuring a memorable experience.

The event promotes physical fitness and community engagement, encouraging everyone to join in the fun. Registration is available online, and attendees are reminded to bring a signed waiver and photo ID. Spectators can also enjoy the festival area for a small fee. Visit the organization's website for the most recent information.

The 2025 NorCal DEKA FIT & Ultra event will take place at the Safe Credit Union Convention Center in Sacramento, California, over two days of dynamic fitness challenges. Participants can choose between the DEKA FIT, which includes a 5 km course with 10 fitness zones, and the more intense DEKA FIT Ultra. This event is designed for all fitness levels, promoting endurance, strength, and mental toughness. Additionally, the DEKA Athlete Judge Program will be implemented to ensure a professionally judged experience for all athletes. Finishers will receive awards, and there are opportunities for volunteering and coaching within the DEKA community. Visit the organization's website for the most recent information.

The Big Bear Spartan Trifecta Weekend, scheduled for May 17-18, 2025, at Big Bear Mountain Resort, offers a challenging series of obstacle course races set against a stunning mountainous backdrop. Participants can choose from three main events: the Sprint 5K featuring 20 obstacles, the Super 10K with 25 obstacles, and the Beast 21K, which includes 30 obstacles. Additionally, there is a Kids Race designed for younger participants. This event promises significant elevation gain, making it a memorable experience for athletes of all levels. The weekend also includes opportunities for team participation and discounts for service members. Visit the organization's website for the most recent information.

The Monterey Spartan Event Weekend, taking place at Toro Park, features a variety of obstacle course races, including a Sprint 5K with 20 obstacles and a Super 10K with 25 obstacles. This scenic venue, located near Salinas, offers participants a challenging course with rugged trails, steep climbs, and stunning views of California's natural beauty. Additionally, there is a Kids Race designed for younger participants, making it a family-friendly event. The weekend promises an exhilarating experience for both competitive racers and casual participants, all while enjoying the picturesque surroundings of Toro Park. Visit the organization's website for the most recent information.

Tough Mudder Big Bear is an exhilarating obstacle course event taking place in Big Bear, California, on September 6 and 7, 2025. Participants can choose between a 5K course featuring over 12 obstacles or a challenging 10K course with 20 obstacles, designed to test teamwork and endurance. The event not only promises thrilling physical challenges but also supports the Slave 2 Nothing Foundation, which focuses on combating substance abuse and human trafficking. After completing the course, participants can celebrate with a finisher meal from In-N-Out Burger and enjoy the vibrant Mudder Village Festival. Visit the organization's website for the most recent information.

The Angel Stadium Spartan Stadion Weekend is an exciting obstacle course race taking place at the iconic Angel Stadium in Anaheim, California. Participants can challenge themselves in a 5K race featuring 20 obstacles, designed to test strength and endurance. There is also a Kids Race, offering a shorter distance with obstacles for younger participants.

This event provides a unique opportunity to experience the stadium while engaging in a fun and competitive atmosphere. After the race, attendees can enjoy nearby attractions, including Laguna Beach. The event promises a memorable experience for both first-time racers and seasoned athletes. Visit the organization's website for the most recent information.

The Mammoth Spartan Super World Championship Weekend, taking place in Mammoth Lakes, California, features the inaugural 10K Super World Championship race. Set against the stunning backdrop of the Sierra Nevada Mountains at an elevation of 7,900 feet, this event challenges participants with a mix of high-altitude terrain and demanding obstacles. Competitors can choose from various race formats, including a Sprint, Super, and Beast, along with a Kids Race. The weekend promises grit, glory, and exclusive championship swag, making it an unforgettable experience for athletes and spectators alike. Visit the organization's website for the most recent information.

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 fitness and teamwork, including mud, water, and strategic tasks. Participants can choose from various events, including a 4k Competition Wave, a 4ishK Fun Run, and a 1k Fun Walk/Run. This year's race will introduce a new section and offer custom jerseys for all participants. The day will conclude with an after-party featuring music, games, and vendors, set against the beautiful backdrop of the high desert. Visit the organization's website for the most recent information.

The SoCal Spartan Event Weekend, taking place at Lake Perris State Recreation Area, offers a thrilling start to the 2026 season with a variety of obstacle course races. Participants can choose from a 5K Sprint featuring 20 obstacles, a 10K Super with 25 obstacles, and a challenging 21K Beast with 30 obstacles. There is also a Kids Race ranging from 1 to 3 kilometers, designed for family fun. Set against scenic mountain views, this event promises an exhilarating experience for both individuals and teams, making it a perfect opportunity to test physical limits and enjoy the outdoors. Visit the organization's website for the most recent information.