California
California Obstacle Race Calendar 2026-2027
Monthly updates for California
Get new running races (and updates) in your inbox every month.
Explore the best obstacle runs in California for 2026-2027! Our updated list features 18 exciting races across the region. Find your next race in California below and join the running community at these great events!
November 2026
Spartan obstacle races at Santa Margarita Ranch on Nov 7 and Nov 8 2026, with events from a kids 1 to 3 km race up to a 50 km Ultra and multiple adult distances.
Two days of obstacle course races at Santa Margarita Ranch, California with Sprint, Super, Beast, Ultra and kids races across vineyard and forest terrain.
A mud-and-obstacle 5K at Oak Canyon Park on November 21, 2026, featuring mud pits, walls, monkey bars, a finish-line festival, and packet pickup the day before.
January 2027
A weekend of Spartan obstacle races at Lake Perris with 5K, 10K, 21K and kids races on a flat, scenic course near Perris, California.
February 2027
A 5 km Spartan obstacle race with 20 obstacles at Dodger Stadium on February 20, 2027, plus kids races and spectator access in Los Angeles.
Monthly updates for California
Get new running races (and updates) in your inbox every month.
March 2027
A family friendly muddy 5K at Oak Canyon Park with obstacles, mud pits, a pre party, VIP options and a Buy One & Give One donation program.
A 5K mud run at Lake Elsinore Diamond Stadium on March 13, 2027 with obstacles, mud pits, a pre-party and post-race festivities; family friendly and kids welcome.
Obstacle course event at Lake Elsinore Raceway on March 20, 2027 offering 15K and 5K courses, Infinity laps, a Mudder Village festival, and finisher rewards.
Tough Mudder Los Angeles at Lake Elsinore Raceway on March 20, 2027 features 15K and 5K obstacle courses, Infinity laps, and spectator options.
April 2027
An obstacle course weekend at Modesto Reservoir Regional Park featuring Sprint, Super, Beast, Ultra and kids races across rugged NorCal terrain with Bay Area views.
Two days of Spartan obstacle races at Pala Fox Raceway including Sprint, Super, kids races and spectator access with mud pits rope climbs and a festival finish.
A 5K mud and obstacle run at Club Moto in Livermore on April 17, 2027 with required signed waiver, a spectator fee, and listed entry prices.
Annual 5K mud and obstacle run at Hobb's Grove in Sanger with adult and KIDZ family waves, required waivers, and a spectator fee.
May 2027
Two-day Spartan weekend at Big Bear Mountain Resort with Sprint, Super, Beast and kids races on high-altitude, climb-heavy terrain and a Trifecta option.
Mud Factor's Seriously Fun 5K mud and obstacle run returns to Mahon Ranch in Elk Grove on May 16, 2027, with adult and KIDZ family waves and required waivers for participants.
Obstacle course weekend at Toro Park near Salinas, CA with Sprint 5 km (20 obstacles), Super 10 km (25 obstacles), kids races and spectator access.
August 2027
NorCal Spartan weekend at Mahon Ranch near Elk Grove features a Sprint 5 km with 20 obstacles and a Super 10 km with 25 obstacles.
September 2027
Experience rugged trails and mud at Lake Elsinore Raceway with Spartan 5K, 10K, and Kids obstacle races set against Southern California’s largest natural freshwater lake.