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 17 exciting races across the region. Find your next race in California below and join the running community at these great events!
November 2026
January 2027
Lake Perris hosts a weekend of Spartan obstacle races with Sprint, Super, Beast and kids events on a flat, fast course set in a mountain rimmed park.
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.
March 2027
Muddy Dash Irvine on March 6, 2027 at Oak Canyon Park is a family friendly 5K mud run with obstacles, waist deep mud pits, a pre party and a post race party.
Family-friendly 5K mud run at Lake Elsinore Diamond Stadium with obstacles, mud pits, a pre-party, post-race party, and Value and VIP registration options.
Monthly updates for California
Get new running races (and updates) in your inbox every month.
Tough Mudder Los Angeles at Lake Elsinore Raceway on March 20, 2027 features mud, named obstacles and multiple formats from about 5 to 15 km plus Infinity laps.
Tough Mudder Los Angeles on March 20, 2027 at Lake Elsinore Raceway offers multiple course lengths, named obstacles, finisher items and a Mudder Village spectator option.
April 2027
A two-day Obstacle Course Racing weekend at Modesto Reservoir Regional Park on Apr 03-04, 2027 with Sprint, Super, Beast, Ultra and kids races.
Obstacle course weekend at Pala Fox Raceway with a 5 km sprint of 20 obstacles, a 10 km super of 25 obstacles, kids races and an obstacle workshop.
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 obstacle run at Hobb's Grove in Sanger, CA on April 25, 2027, with adult and KIDZ family waves; signed waiver required and spectators admitted for a fee.
May 2027
Obstacle course races at Big Bear Mountain Resort on May 15 and 16, 2027 include Sprint, Super, Beast and kids events at high altitude with steep climbs.
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.
Spartan obstacle weekend at Toro Park near Salinas with Sprint 5 km, Super 10 km, kids races, workshops, and spectator access.
August 2027
An obstacle race weekend at Mahon Ranch near Elk Grove featuring a Sprint 5 km with 20 obstacles, a Super 10 km with 25 obstacles, kids races, workshops, and multihour heats.
September 2027
Obstacle course weekend at Lake Elsinore Raceway with a 5 km Sprint (20 obstacles), 10 km Super (25 obstacles), kids races, and an obstacle workshop.
October 2027
A two-day obstacle event for people and their dogs on a 20 acre course in Phelan, CA, featuring over 20 obstacles plus an after party with music and vendors.