Trail Running Calendar California 2026-2027

A point to point half marathon to the summit area of Mt. Umunhum on March 8, 2025, covering about 13.35 miles with 4,767 feet of ascent, marked mainly by pink ribbons and supported by aid stations with toilets.

Chanoko Trail Runs on March 6, 2027 at Granite Beach, Folsom Lake SRA offers 31K, 10K and 5K courses with finisher medals and post race food. The 31K includes a finisher hoodie and a limited shuttle option.

A nordic ski event at Tahoe Cross Country Center on March 7, 2027 offering 26 km and 10 km loops, a limited untimed Tour Wave, a finish-line party with food and live music, and proceeds supporting Tahoe Nordic Search & Rescue.

Santa Barbara Nine Trails is a trail running event in Santa Barbara, CA on March 13, 2027, offering 35 mile and 17 mile race options organized by AllWeDoIsRun.

Trail races on Catalina Island include a marathon, 10K and 5K in Avalon, California on March 13, 2027. The event is California's State Off-Road Marathon Championship and uses Conservancy trails with ocean views.

Trail running event in Santa Barbara CA on March 13, 2027 offering 35 mile and 17 mile courses, organized by AllWeDoIsRun.

Trail runs in Anza Borrego Desert on March 13, 2027 with 50K, marathon and half marathon courses, marked routes and aid stations. The event starts at Stagecoach Trails RV Resort with campsite facilities and course maps provided.

A three day trail running weekend in Marin County offering three distances including a new 100K point to point course, scenic ridgelines and summit views, timed results, staffed aid stations and shuttle support.

Timed 6-, 12-, and 24-hour running events at Lake Cuyamaca on a scenic 2 mile loop near Julian, CA, with on-site dining, a store, and camping and RV options.

A multi-distance trail event on March 22, 2025 at Calero County Park in San Jose offering runs from a kids race to a 50K, single track and dirt-road courses, multiple aid stations, and per-distance time limits.

Tough Mudder Los Angeles on March 20, 2027 at Lake Elsinore Raceway blends winding single-track and arid ridges with waterlogged mud obstacles. Event formats include 15+ km and 5 to 8 km courses, an Infinity multi-lap option, and spectator..

Multiple trail distances run through Redwood Regional Park on March 20, 2027 at Chabot Space & Science Center. Routes use East Ridge, West Ridge, Stream and Bridle trails and distances were measured with a Rolatape surveyor's wheel.

Trail running event in Valencia, California on March 20, 2027, offering 10K, half marathon and 50K ultra courses with significant climbing, single-track sections, aid stations and chip timing.

A half marathon and 10K on a rugged high-desert course near Joshua Tree National Park on March 20, 2027. The event benefits the John Wayne Cancer Foundation, offers chip timing, aid stations, and finisher awards.

Tough Mudder Los Angeles at Lake Elsinore Raceway on March 20, 2027 offers multiple course options including a 15K with 20 plus obstacles, a shorter 5 to 8 kilometer course, Infinity laps, spectator access, and group packages.

An annual trail event at Soboba featuring the first NATRO Marathon Championship plus a half marathon, 5k and kids 3k for ages 12 and under. Native and Open divisions, finisher awards, and proceeds benefit the Noli Indian School scholarship..

An hourly backyard ultra on Dry Creek Parkway near Sacramento where runners repeat a 4.16 mile loop until only one completes the most yards. Each loop must be finished within the hour and the last runner to complete a loop wins.

A multi distance running event at Quarry Lakes Regional Recreation Area in Fremont, CA on March 27, 2027. The mostly flat course follows part of the historic Western Pacific Trail and includes a remote participation option.

A coastal trail race in Del Mar offering 10K and 5K out-and-back courses on hard-packed dirt, noted for flat, fast running, lagoon views, and a downhill finish; held March 27, 2027 as a championship qualifier.

A spring trail race at Pueblo Day Use Area in Santa Teresa County Park on April 5, 2025 offering 5K, 10K, 10 Mile and a half marathon across marked, hilly trails with aid stations and a four hour half marathon limit.