Trail Running calendar near Fairfield 2025-2026

Run through redwood lined trails at Huddart Park in the Crystal Springs Trail Run, with distances from 8K to 50K plus a free kids sprint. Enjoy scenic single track, frequent aid stations and a commemorative finisher medal.

Run scenic single track along Folsom Lake under oak trees with gently rolling hills and a creek crossing. Distances from 1 mile to 50K, race day registration on site, and every finisher earns a commemorative medal.

Enjoy scenic shoreline trails at Folsom Lake with the Gumby 5K or 10K on January 24, 2026. Expect a fun, challenging course on single track and groomed trails, plus finisher medals and pre order soft cotton shirts.

Run the scenic, technical trails of Montara Mountain at the Pacifica Foothills Trail Run in San Pedro Valley Park, with 30K, half marathon and 10K options for all abilities. Full aid stations and sweeping coastal views make this a must for..

The Golden Gate Trail Classic will take place in San Francisco from Saturday 24 January 2026 to Sunday 25 January 2026. You can run between 15 and 50 miles.

Run along the San Francisco Bay at Coyote Hills Regional Park in Fremont with half marathon, 10K and 5K options plus a remote entry. Trails, boardwalks and paved paths make for a scenic, low climb course and walkers are welcome.

Jed Smith Ultra Classic in Sacramento on January 31, 2026 offers scenic looped courses along the American River Parkway with distances from 50 miles to the half marathon. Entrants receive a shirt and finishers a handcrafted wooden medal.

Run scenic, rugged trails around Mt. Umunhum at Almaden Quicksilver Park with distances from a mile and kids run up to 50K. Clearly marked courses, aid stations and medals for all finishers make this winter trail event welcoming to all.

Run scenic shoreline trails at Escape from Folsom Trail Runs on Feb 7 and 8, 2026 at Granite Beach, Folsom Lake. Choose a 5K or 10 Mile and earn a finisher medal while enjoying aid stations and lake views.

Run scenic coastal trails in the Marin Headlands at the Golden Gate Trail Run in Sausalito offering distances from 8K to 50K plus a kids dash. Expect rugged views, stocked aid stations and finisher medals for all.

Soak up San Francisco Bay views at Bay Breeze, a mostly flat road and trail event with half marathon, 10K, 5K and a remote runner option. Walkers and hikers are welcome on the scenic waterside course.

Explore scenic Sierra Nevada foothill trails near Auburn, CA with FOURmidable races offering 50K, 35.5K, half marathon and 13K options on Saturday Feb 21, 2026. Runner focused prize money and course record bonuses add extra incentive.

Take on scenic Lake Chabot trails in Castro Valley on February 21, 2026 with distances from 5K to a rugged 50K. Moderate technical singletrack, friendly aid stations, and a small field make this a challenging yet welcoming trail day.

Run the Lost Trail 5K or Half Marathon at Granite Beach, Folsom Lake, enjoying lake views and wildflowers along well marked trails. Friendly aid stations and a scenic course make this a great early season challenge.

Montara Mountain Trail Run in Pacifica offers distances from 10K to 50K plus a kids dash, with scenic coastal single track and big elevation gains. All finishers earn a custom medal and preregistered runners get shirts.

Experience the Salmon Falls 50 km ultra through scenic Sacramento gold country on a point to point trail to Folsom Lake. A new half marathon option joins the race and proceeds support Breakthrough T1D.

Experience panoramic Bay views on the hilly trails of Angel Island with 5, 10, and 15 mile options and a free kids dash. Finishers earn custom medals and pre registered runners receive shirts; a charter ferry from Tiburon is required.

Way Too Cool in Cool, California brings scenic 50K and 10 mile trail runs over rolling hills and creek crossings. Enjoy stocked aid stations, a handcrafted finisher medallion, and post race tacos with a beer garden.

Enjoy scenic ridgeline trails in La Honda CA with 50K, half marathon and 10K courses through redwood forests and open grasslands. All entry fees support Ridge Trail Organisation and every runner receives a Bay Area Ridge Trail duffel bag.

Tackle scenic trails at China Camp State Park in March 2026 with in person or virtual 5K, 10K, and a challenging half marathon. All entrants receive a beer sampler stein, event shirt, and handcrafted woodallion.