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 22 exciting races across the region. Find your next race in California below and join the running community at these great events!
May 2027
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.
Two-day obstacle race weekend at Toro Park near Salinas with Sprint 5K, Super 10K, kids races and spectator options.