California
California Obstacle Race Calendar 2026-2027
Monthly updates for California
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Explore the best obstacle runs in California for 2026-2027! Our updated list features 20 exciting races across the region. Find your next race in California below and join the running community at these great events!
June 2026
Muddy Dash San Diego on June 6, 2026 is a noncompetitive 5K with obstacles, mud pits and slides at Barona Oaks Motocross Park, followed by an after party with music, food trucks and drinks. Value and VIP registration options are available.
August 2026
Operation YOSEMITE 2026 is an in-person trail event in Mono County, California on August 8, 2026, offering four distances from 6 to 22 miles with a 20 lb dry load and specified elevation gains.
NorCal Spartan Event Weekend at Mahon Ranch in Elk Grove features Sprint, Super and Kids obstacle races on rolling trails and river crossings, with spectator options and team registration available.
September 2026
Tough Mudder Big Bear is an obstacle event on September 12, 2026 at Bear Mountain near Big Bear Lake, CA. It offers 5K and 10K courses with multiple obstacles, finisher items, spectator passes, volunteer roles, and group options.
A Stadion 5 km obstacle race at Angel Stadium of Anaheim on September 12, 2026, featuring 20 obstacles, a kids race and spectator access inside the ballpark. Ticketed entries and race day services are listed for participants and visitors.
A family-oriented mud run in Redding on September 12, 2026 featuring a course just under 5 km with obstacles, creek crossings, vendors, food, and children's activities. The event supports the Active 20-30 Club of Redding.
A Spartan obstacle weekend at Lake Elsinore Raceway featuring Sprint 5K, Super 10K, kids races and Hurricane Heat formats. Expect rugged trails, mud, varied terrain and onsite spectator options.
October 2026
Ruff Run California on 10/17/2026 in Phelan, CA presents a 20 acre obstacle course for people and their dogs with over 20 obstacles, 4K and 1K options, and an after party with music, games and vendors.
November 2026
A multi-distance Spartan weekend at Santa Margarita Ranch featuring trail and vineyard terrain, obstacle counts for each race from 5K to 50K, a kids race, workshop, and spectator access.
Central California Spartan Trifecta Weekend at Santa Margarita Ranch on Nov 7 to 8 2026 offers obstacle races from a 5 km Sprint to a 50 km Ultra set among vineyards and the Los Padres National Forest. Spectator access and an obstacle workshop are in..
Terrain Race Irvine on November 21, 2026 is a mud and obstacle 5K at Oak Canyon Park featuring mud pits, walls, ropes and monkey bars, plus pre-race and finish-line festivals with food, music and finisher medals.
January 2027
A Spartan Race weekend at Lake Perris State Recreation Area on Jan 23 and 24, 2027 features 5K, 10K and 21K obstacle races plus a kids race. The course is described as flat and fast with lakeside views and park facilities.
March 2027
Tough Mudder Los Angeles on March 20, 2027 at Lake Elsinore Raceway is a mud obstacle event over scrubland and motor-cross terrain. Race options include 15 plus km, 5 to 8 km, Infinity laps, spectator access, and group packages.
An outdoor obstacle event at Lake Elsinore Raceway on March 20, 2027, offering multiple distances including 5 to 8 km and 15 plus km, Infinity laps, named obstacles, finisher medal, shirt, headband, and a finisher drink.
April 2027
A two day Spartan obstacle race weekend at Modesto Reservoir Regional Park offering Sprint, Super, Beast and Ultra distances plus a kids race and spectator access.
A weekend of Spartan obstacle races at Pala Fox Raceway in Pala, CA on Apr 10-11, 2027, featuring a 5 km Sprint with 20 obstacles, a 10 km Super with 25 obstacles, a kids race and spectator options.
A 5K obstacle run at Hobb's Grove in Sanger, California on April 25, 2027, with Adult and KIDZ Family waves. Waivers and photo ID are required and spectators pay a cash fee for festival area access.
May 2027
A high altitude Spartan weekend at Big Bear Mountain Resort featuring Sprint, Super, Beast and Kids races, plus a Trifecta option to complete all three main distances in one weekend.
A 5K mud and obstacle run at Mahon Ranch in Elk Grove on May 16, 2027, with adult and KIDZ family waves, required signed waivers and photo ID for adults, spectator festival access, and on-site event photography.
A weekend of Spartan obstacle races at Toro Park near Salinas with Sprint, Super and kids distances on wooded, hilly trails. Team entries, volunteer options, spectator access, and a service member discount are available.