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 19 exciting races across the region. Find your next race in California below and join the running community at these great events!
June 2026
Muddy Dash San Diego on June 6, 2026 is a noncompetitive 5K with obstacles, mud pits and slides at Barona Oaks Motocross Park, followed by an after party with music, food trucks and drinks. Value and VIP registration options are available.
August 2026
Operation YOSEMITE on August 8, 2026 is a load-carrying trail event near June Lake and Silver Lake in Mono County, California. Distances range from 6 to 22 miles with notable elevation gain and a 20 lb dry load requirement.
A Spartan obstacle weekend at Mahon Ranch near Elk Grove features a Sprint 5 km with 20 obstacles, a Super 10 km with 25 obstacles and kids races, plus team entries, volunteer options and service member discounts.
September 2026
Tough Mudder Big Bear is an obstacle event on September 12, 2026 at Bear Mountain near Big Bear Lake, CA. It offers 5K and 10K courses with multiple obstacles, finisher items, spectator passes, volunteer roles, and group options.
A Stadion 5 km obstacle race with 20 obstacles at Angel Stadium of Anaheim, plus a kids race and spectator tickets. The event has a 4.8 rating from 40 testimonials and offers team entry options and a service member discount.
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 weekend of Spartan obstacle races at Lake Elsinore Raceway on Sep 26 and 27, 2026 featuring Sprint and Super courses, kids races, Hurricane Heat challenges, and spectator access near a large natural freshwater lake.
October 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
A two-day Spartan obstacle weekend at Santa Margarita Ranch with race distances from a 5K sprint to a 50K ultra, set on vineyard trails near Los Padres National Forest and including a kids race and obstacle workshop.
A Spartan Trifecta Weekend at Santa Margarita Ranch with Sprint, Super, Beast and a 50K Ultra across vineyard and forest terrain, plus kids races, an obstacle workshop, spectator access and a multi-race Trifecta Pass.
An obstacle and mud focused 5K at Oak Canyon Park on November 21, 2026 featuring mud pits, walls, ropes and monkey bars, plus a finish line festival. Registration includes value and VIP package options.
January 2027
SoCal Spartan Trifecta Weekend at Lake Perris on Jan 23 and 24, 2027 offers 5K, 10K and 21K obstacle races plus kids races and spectator options at a lakeside park with camping and facilities.
March 2027
Tough Mudder Los Angeles on March 20, 2027 at Lake Elsinore Raceway blends winding single-track and arid ridges with waterlogged mud obstacles. Event formats include 15+ km and 5 to 8 km courses, an Infinity multi-lap option, and spectator access.
Tough Mudder Los Angeles at Lake Elsinore Raceway on March 20, 2027 offers multiple course options including a 15K with 20 plus obstacles, a shorter 5 to 8 kilometer course, Infinity laps, spectator access, and group packages.
April 2027
A multi-distance Spartan obstacle race weekend at Stanislaus County Parks on Apr 3-4, 2027, featuring Sprint, Super, Beast, Ultra and kids races across technical trails, grasslands and hills with signature obstacles and team options.
Two days of obstacle-course racing at Pala Fox Raceway featuring Sprint, Super and Kids races. Courses include mud pits, rope climbs and varied terrain, with a post-race festival for finishers.
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 high altitude Spartan weekend at Big Bear Mountain Resort featuring Sprint, Super, Beast and Kids races, plus a Trifecta option to complete all three main distances in one weekend.
A weekend of Spartan obstacle course racing at Toro Park near Salinas, CA, with Sprint and Super distances, kids races, trail events, team registration, and spectator access.