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!
Tough Mudder Los Angeles on March 21, 2026 at Lake Elsinore Raceway offers 15K, 5-8K, Infinity laps, spectator passes, and group packages, with named obstacles and finisher items including medals, shirts, headbands, and a finisher drink.
Tough Mudder Los Angeles returns to Lake Elsinore Raceway on March 21, 2026. Choose from muddy 5K and 15K obstacle courses, or take on the multi-lap Infinity challenge. Finishers receive a medal, shirt, headband, and a celebratory drink.
Get muddy and make memories at Muddy Dash in Irvine on March 28, 2026 at Oak Canyon Park. Tackle an obstacle course with mud pits then celebrate at the lively post race festival with medals, music and family friendly fun.
April 2026
The Spartan Trifecta Weekend returns to Woodward Reservoir Regional Park near San Jose. Choose from five obstacle course distances, from a 5K Sprint to a 50K Ultra, across a flat, scenic landscape.
Take on the rugged terrain of Pala Fox Raceway at the San Diego Spartan Event Weekend. Choose from the Sprint 5K with 20 obstacles or the Super 10K with 25 challenges. A shorter kids race is also available for family fun.
Test your functional fitness at the NorCal DEKA FIT Weekend in Sacramento. This two-day event features ten fitness zones over a 5km course, with individual, team, and endurance competitions. It takes place at the downtown convention center.
A 5k mud and obstacle run at Hobb's Grove in Sanger, CA on April 26, 2026, featuring Adult and KIDZ Family waves, required signed waivers for participants, and festival area access for spectators.
Conquer high-altitude Spartan obstacle races at Big Bear Mountain Resort. The extreme weekend features Sprint, Super, and Beast distances, with a kids race also available. The courses are known for significant elevation gain and descents.
Spartan returns to the scenic Toro Park near Salinas for a weekend of obstacle racing. Choose the 5K Sprint or 10K Super course through rolling hills with ocean views. A kids race and team discounts are also part of the event.
August 2026
A two day Spartan obstacle event at Mahon Ranch near Elk Grove with sprint, super, and kids races across trails and river crossings. Team entries allow shared start times and eligible service members may receive a discount.
September 2026
Tough Mudder Big Bear on September 12, 2026 at Bear Mountain near Big Bear Lake offers 5K and 10K obstacle runs plus a Mudder Village spectator experience. Finishers receive 2026 medals, shirts, headbands and a free finisher drink.
The Spartan Stadion event takes over Angel Stadium for a 5K obstacle course race. Racers tackle 20 obstacles and navigate the stadium's bleachers. A kids' race and spectator tickets are also available.
Spartan returns to Lake Elsinore Raceway for a weekend of obstacle course racing. Choose from the 5K Sprint, 10K Super, or Kids races, all featuring rugged trails and plenty of mud. Teams can race together and service members qualify for discounts.
October 2026
An obstacle event in Phelan, California where people and their dogs navigate a 20 acre course with over 20 obstacles, including mud, water and problem solving. The program also offers a 1k walk/run and a volunteer option.
November 2026
The Terrain Race Irvine arrives at Oak Canyon Park in November 2026. Runners can tackle a 5K obstacle course with over 15 challenges or kids can enjoy the half mile Mini Monkey Run. A post race festival with music and food offers a chance to celebrat..
January 2027
Kick off the Spartan season at the scenic Lake Perris State Recreation Area. Choose from four obstacle course distances, from a 5K Sprint to a 21K Beast. The event offers camping, team starts, and is located south of San Bernardino.