Trail Running Calendar California 2026-2027

Join the Greater Sacramento Area Polar Plunge & Runs for a chilly community plunge and scenic runs. Pick a timed 5K trail or a 1 Mile fun run, fundraise for Special Olympics Northern California and even register as a 'chicken' to stay dry.

Run through an active limestone quarry at the Cemex Quarry Quest 5K in Rialto, where rugged terrain and towering industrial equipment create a thrilling backdrop. Enjoy a memorable race while supporting cancer awareness and fundraising.

Run the Tesoro Viejo Spring Classic in Madera with half marathon, 10k, 5k or virtual options along tree lined trails and rolling hills. Finishers get a tech shirt and custom medal, plus a festival with live music and local treats.

Multi-distance trail races through Anza Borrego Desert near Julian, CA, with 50K, marathon, and half marathon options, campground amenities, full aid stations, and included race shirt and finisher medals.

Santa Barbara Nine Trails in Santa Barbara, CA offers 35-mile and 17-mile trail endurance runs on March 14, 2026. A 2026 runner guide is available and a waitlist for entries is open; charges occur only after USFS permits and confirmation.

A 50K trail run in Foresthill, California that follows sections of the Western States Trail on an out and back course. The route starts at Drivers Flat, turns at Dardanelles Creek, includes six aid stations and has a cutoff of 9 hours 30 mi..

A trail marathon and shorter races held March 14, 2026 in Avalon on Catalina Island. The event includes the state Off Road Marathon Championship plus 10K, 5K and a Kids Run.

A long-distance trail event in Sausalito featuring a 50K and 50 Mile through Marin Headlands, Muir Woods, and Mt. Tamalpais, with live timing, aid stations, cupless provisions, and cash prizes for top 50 Mile finishers.

Singletrack Stampede in Calabasas, CA offers trail races including 10k and 22k plus half marathon league entries on singletrack with switchbacks, creek crossings and viewpoints; entries include a finisher medal and free race photography.

A point to point 35 mile trail endurance run on Santa Barbara front country trails with over 10,000 feet of climb. Minimal markings, required GPX navigation and spaced aid stations demand self sufficiency.

A multi-distance trail event on the Southside Trail at Folsom Lake featuring mostly single-track running, lake and Sierra views, technical sections, course markings, aid stations, and commemorative medals for finishers.

Challenge yourself on the scenic, technical trails of China Camp State Park with 5K, 10K and Half Marathon options March 13 to 16, 2026. Live and virtual entries available with registration price rising after Dec 31, 2025.

A timed endurance event at Lake Cuyamaca offering 6-, 12-, and 24-hour options, cupless racing, included access fee, campground headquarters, and a no-refund policy.

A trail running weekend in Marinwood, California, with 28K and 50K single loops plus a point-to-point 100K, featuring routes that summit several high points and offer wide views across the San Francisco Bay Area.

A themed trail event in Cool, California offering 50K, 25K and 10K on marked courses with mapped routes, aid stations, live timing, participant shirts and finisher medals.

A trail race in Valencia near Santa Clarita on March 21, 2026 offering 10K, Half Marathon and 50K courses with singletrack, substantial climbing and panoramic ridgeline views. Timing, aid stations and finisher medals are provided.

A trail race at Bothe Napa Valley State Park on March 21, 2026 offering marathon, half marathon and 10K with a 300 runner limit. Courses use single track loops with one aid station and a six hour marathon cutoff.

Run peaceful redwood trails in Oakland with distances from a kids 50 yard dash to 50K ultras, plus family friendly 5K and marathon options. Enjoy scenic singletrack, stocked aid stations and springtime forest views.

A community fundraiser in downtown Placerville on March 21, 2026 offering live and virtual 5K and 10K options to support New Morning Youth & Family Services and other local nonprofits serving seriously ill children.

Trail races in Whiting Ranch Wilderness Park on March 21, 2026 offering 6k, 10k, half marathon and 30k options. Courses run through the foothills of the Santa Ana Mountains with climbs, views and native oak habitat.