Trail Running Calendar California 2026-2027

A 24 hour trail event in Perris, CA on January 29, 2027 where runners repeat a Molcajete 1.0 loop of more than 4 miles. Individual and four-person team entries are available, with awards for top individuals and teams.

Runs along the bay at Coyote Hills Regional Park in Fremont include a half marathon, 10K and 5K on mostly flat courses with mixed surfaces and boardwalks through marsh areas. Walkers are welcome.

Multiple race distances from 30K to 100K are scheduled for January 30, 2027 near Las Virgenes Road in Calabasas, California. The 100K is a 2026 WS100 qualifier and registration opens July 1, 2026.

Experience the coastal beauty of the Marin Headlands at the Golden Gate Trail Run. Choose from distances ranging from a 50K trail race to a fun kids dash with views of the Golden Gate Bridge and San Francisco.

Experience a winter run through the technical terrain of the Red Hills Recreation Area in the Sierra Foothills. Choose between six or twelve mile distances featuring water crossings and muddy trails in a scenic natural environment.

Mt. Umunhum Trail Conquest (Winter) is a multi-distance trail event at Almaden Quicksilver County Park offering races from a kids run to a 50K with marked out-and-back courses, multiple aid stations, and summit sections to Bald Mountain or..

Trail races at Granite Beach along Folsom Lake include a 5K and a 10 Miler on February 6 and 7, 2027, with aid stations, finisher medals, race shirts for sale, and both age group and overall awards.

Trail races at Daley Ranch in Escondido, CA include a 50K (two 15.6 mile loops, 6,318 ft gain) and a 13.1 mile half, with three stocked aid stations, set cutoffs, race shirts, finisher medals, and awards.

Scenic races at San Leandro Marina on February 13, 2027 feature a half marathon, 10K and 5K along a mostly-flat bayside trail with waterside views; walkers and hikers are welcome and volunteer photographers provide free photos.

Running For Warriors in Clovis, CA offers in person 5k and 2 mile events plus a virtual 5k to support veteran focused charities. The organizer is a 501(c)(3) nonprofit that provides financial assistance to groups serving veterans.

A 10th annual trail race in San Pasqual Valley with 20 mile, half marathon and 10K routes through vineyards and orange groves. Longer routes summit Raptor Ridge twice and the finish includes a free local wine tasting.

Montara Mountain Trail Run on February 20, 2027 in San Pedro Valley Park offers distances from a free 50 yard kids dash to a 50K, with marked trails, cupless aid stations every 6 to 7 miles, and substantial elevation gain on many courses.

Experience a trail running event in Auburn featuring four major climbs and 6000 feet of elevation. Choose from distances ranging from 13km to 50km on a course with less than one mile of pavement.

Trail races at Granite Beach along Folsom Lake featuring a 5K and a half marathon on single track trails with scenic lake views and stocked aid stations. Finisher medals and pre order race shirts are available.

Self supported single-loop trail run of about 51 miles in San Diego on Feb 20, 2027. No fees, no aid and no course marking; participants must navigate and carry supplies.

A point to point 50 kilometer trail ultramarathon in the Sacramento foothills, running mostly on Cronan Ranch area trails from Magnolia Ranch Trail Head to Folsom Lake. A new half marathon distance has been added and proceeds support Breakt..

Trail races in Sanborn County Park on mostly single track, technical forest trails with multiple distances, significant elevation gain, marked courses, and full aid at key points.

A loop-based endurance event at Will Rogers State Historic Park offering 24, 12, and 6 hour timed races plus fixed distances and relay options on a 2.2 mile course.

Trail races at Goodman Ranch Sycamore Canyon Preserve near Poway, California with 100K, 50K and half marathon options, offered as solo entries or relay teams. Solo 100K entrants must have completed a 50K or longer race.

Trail races on Tejon Ranch near Lebec, California, with 100k, 50k, 25k and 11k options. Marked fire road courses include aid stations, chip timing, noted wildlife and a finish line festival with food and a beer garden.