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 22 exciting races across the region. Find your next race in California below and join the running community at these great events!
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.
Two day 5K mud run in Moorpark, CA on August 15 and 16, 2026. The course includes 15 major obstacles, deep mud pits and rolling hills, with rinse stations and a Basecamp area featuring food trucks and music.
A two-day Spartan obstacle race at Mahon Ranch near Sacramento featuring Sprint 5 km, Super 10 km, kids races, team entries, volunteer options and spectator access.
September 2026
A mountain based Tough Mudder at Bear Mountain on September 12 2026 offering 10K and 5K obstacle courses plus spectator and group options.
A 5 km Stadion obstacle race with 20 obstacles at Angel Stadium on September 12, 2026, plus a 1-1.5 km kids race and spectator access.
An outdoor mud obstacle run near Redding, CA, with a just-under 5 km course through fields, hills and creek crossings. The family-oriented event includes vendors, children's activities, food, drinks and event swag.
Black Oak Challenge in Tuolumne on September 19, 2026 features a 5K with on-course physical and mental challenges and a 1K family run with water obstacles. Finisher medals are awarded to 5K finishers.
An obstacle course race weekend at Lake Elsinore Raceway with Sprint, Super, kids races, Hurricane Heat events, and spectator access on Sep 26-27, 2026.
October 2026
Annual mud run in San Bernardino with a 5K for individuals and teams and a 1K kids race on October 10, 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
Obstacle course weekend at Santa Margarita Ranch with Sprint, Super, Beast, Ultra, kids races and a pre-race obstacle workshop.
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 is an obstacle and mud focused 5K at Oak Canyon Park on November 21, 2026, featuring mud pits, walls, ropes and 11+ obstacles, plus pre race packet pickup and a post race festival with food, music and vendor booths.
January 2027
Two days of obstacle racing at Lake Perris with Sprint 5 km, Super 10 km, Beast 21 km and kids races on a flat, fast course with mountain views.
March 2027
Obstacle event at Lake Elsinore Raceway on March 20, 2027 offering a 15+ km course, a 5 to 8 km option, multiple obstacles and a Mudder Village festival.
A mud and obstacle event at Lake Elsinore Raceway on March 20, 2027 offering 15K and 5 to 8K courses, an Infinity multi lap option, spectator access and group packages, with finisher medal, shirt, headband and drink included.
April 2027
Obstacle course weekend with races from 5 km to 50 km, held April 3 and 4 2027 at Modesto Reservoir Regional Park near Waterford CA.
Obstacle course weekend at Pala Fox Raceway with Sprint 5 km, Super 10 km, kids races, spectator options and on-site festival.
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 Spartan obstacle-course weekend at Big Bear Mountain Resort with Sprint, Super, Beast and kids races at about 8,200 feet and the chance to earn a Trifecta.