Trail Running calendar near Modesto 2026-2027

A race day in El Sobrante with a half marathon, 10K, 5K and a hiker division through the hills of Wilcat Canyon; registration windows and fees vary by distance.

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.

Charity trail event at Skyline Ridge Open Space Preserve offering 50K, 30K and 10K with all registration proceeds donated to UCSF cancer research.

Two-day obstacle race weekend at Toro Park near Salinas with Sprint 5K, Super 10K, kids races and spectator options.

Beer City Half San Jose on May 29, 2027 at Almaden Lake Park pairs trail and park running with a beer festival. Events include a half marathon, 10k, 5k, a 1 mile Beer Stroll, the Beat the Beast beer mile, and beer tastings.

Trail races of 10K, half marathon, and marathon at Toro Park, Salinas on May 30, 2027, over rocky trails and dirt roads with summer temperatures around 16ºC and an average altitude of 520 meters.

Trail runs of 31.1 miles and 12.4 miles through Sierra National Forest, with spaced aid stations, onsite pre-race lodging and dinner, and no pets on course or campus.

A point to point 100 mile trail race in Berkeley with 18,000 ft of climb, a 33 hour limit, and a capped field of 300; a Western States qualifier and UTMB Index race.