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!
May 2026
Experience a fun mud filled course at Bates Nut Farm featuring waist deep mud pits and a dozen unique obstacles. This untimed event is perfect for those looking to run crawl and slide through the mud followed by a post race party.
A two-day Spartan Trifecta Weekend at Big Bear Mountain Resort featuring Sprint, Super and Beast obstacle races at high altitude with long climbs and descents; kids races and spectator access are also available.
Mud Factor Sacramento is a 5K mud and obstacle run at the 300 acre Mahon Ranch in Elk Grove on May 17, 2026. The event includes adult and KIDZ family waves, a festival area with paid spectator access, and required signed waivers.
A Spartan obstacle weekend at Toro Park near Salinas on May 30 and 31 2026, featuring a Sprint 5 km with 20 obstacles and a Super 10 km with 25 obstacles. The course runs through wooded trails, rolling hills and coastal views.
August 2026
Experience an endurance event at Silver Lake with four distance options ranging from 6 to 22 miles. Carry a 20lb load through the scenic terrain of Mono County while navigating significant elevation gains.
Obstacle race weekend at Mahon Ranch near Elk Grove on Aug 29-30, 2026 with Sprint, Super and Kids races, team entry options, and service member discounts.
September 2026
Tough Mudder Big Bear on September 12, 2026 features 5K and 10K obstacle courses at Bear Mountain in Big Bear Lake, CA, with finisher medals, shirts, headbands and spectator and group options.
A Stadion 5 km obstacle race with 20 obstacles at Angel Stadium of Anaheim on September 12, 2026, plus a kids race and spectator options; the Stadion shows an average duration of about 1 hour 32 minutes and a 4.8 rating from 40 testimonials.
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 features Sprint 5K, Super 10K, kids races, and multi-hour Hurricane Heat events on rugged, open terrain near a large natural freshwater lake.
October 2026
A loop-based endurance event on Malibu's Chumash Trail with a 3-mile loop and about 1,250 ft gain per loop. It offers two divisions including X HEAVY with escalating weight and uses the motto "Every loop heavier. Every loop harder. Only one leaves wi..
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 two day Spartan Trifecta Weekend at Santa Margarita Ranch featuring trail obstacle races from a 5 km Sprint to a 50 km Ultra. Courses run through vineyards and forest scenery with options for kids, workshops and spectators.
A two-day Spartan Trifecta weekend at Santa Margarita Ranch near Los Padres National Forest features Sprint, Super, Beast and a 50K Ultra across vineyard and hill terrain, plus kids races, an obstacle workshop and spectator access.
A mud and obstacle focused 5K at Oak Canyon Park in Irvine on November 21, 2026, featuring mud pits, walls, ropes, monkey bars and a festival area with vendors and food.
January 2027
Lake Perris hosts a Spartan obstacle weekend Jan 23–24, 2027 with 5 km, 10 km, 21 km and kids races across a flat, fast course by the lake. Team entries, spectator access, volunteer options and service member discounts are available.
March 2027
Tough Mudder Los Angeles on March 20, 2027 at Lake Elsinore Raceway offers multiple obstacle courses from 5 to 8 km and 15 plus km, an Infinity multi lap option, finisher medals and a Mudder Village for spectators.
Tough Mudder Los Angeles on March 20 2027 at Lake Elsinore Raceway features multiple distance mud runs with more than 20 obstacles, finisher rewards, an Infinity multi lap option, and Mudder Village spectator access.
April 2027
Multi-distance Spartan obstacle weekend in Stanislaus County, CA on April 3-4, 2027. Options range from a 5 km sprint to a 50 km ultra, plus a kids race, across trail terrain with signature obstacles.
San Diego Spartan Event Weekend at Pala Fox Raceway on April 10 and 11, 2027 features a 5 km Sprint, a 10 km Super, kids races, spectator access, and a post-race festival with mud pits and rope climbs.