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.

Trail runs at Granite Beach and Auburn Overlook Park offering 31K, 10K and 5K distances, finisher medals for all and a custom long sleeve hoodie for 31K finishers. Aid stations, post race food and a limited shuttle for 31K runners are provi..

A cross-country ski event at Tahoe Cross Country Center on March 7, 2027 offering 26 km and 10 km loops. The race raises funds for Tahoe Nordic Search and Rescue and includes a finish line party with food and live music.

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.

A multi-distance trail event on Catalina Island in Avalon on March 13, 2027, featuring a marathon, 10K, 5K and a kids run. The 49th annual edition is California's State Off-Road Marathon Championship and includes a Triple Crown challenge.

Nine Trails in Santa Barbara, CA on March 13, 2027 offers 35 mile and 17 mile trail course options. The event is organized by AllWeDoIsRun, a member of national trail and running organizations.

A trail race weekend in Anza Borrego Desert State Park on March 13, 2027, offering 50K, marathon, and half marathon courses with aid stations and on-site campground facilities. Participants receive a tech shirt and a finisher medal.

A three day trail running weekend in Marin County offering a point to point 100K plus single loop 50K and 28K that summit Loma Alta and Big Rock Ridge.

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 is a mud obstacle event over scrubland and motor-cross terrain. Race options include 15 plus km, 5 to 8 km, Infinity laps, spectator access, and group packages.

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 03/20/2027 offering 10K, Half Marathon, and 50K Ultra across hills, ridgelines, and canyon terrain with views of the Santa Clarita Valley.

On March 20, 2027 a half marathon and 10K run on a hilly course in the Pioneertown Mountains Preserve near Joshua Tree National Park. The event supports the John Wayne Cancer Foundation and offers chip timing, finisher items, and aid statio..

An outdoor obstacle event at Lake Elsinore Raceway on March 20, 2027, offering multiple distances including 5 to 8 km and 15 plus km, Infinity laps, named obstacles, finisher medal, shirt, headband, and a finisher drink.

A trail event at Granite Beach offering 5K and 10K courses plus a Mighty Mile for senior dogs, with divisions by dog size and Cani Cross, single aid station, finisher medals, and awards for multiple categories.

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.

Western Pacific 2027 stages a half marathon, 10K and 5K on a mostly flat course at Quarry Lakes Regional Recreation Area in Fremont on March 27, 2027, with tiered registration and a remote runner option.

Coast to Crest in Del Mar features out-and-back 10K and 5K courses on hard-packed dirt with minimal elevation and a downhill finish. Wide lagoon views and possible osprey sightings accompany a fast, groomed trail that doubles as a champions..

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.