Trail Running Calendar California 2026-2027

A multi-day trail running festival in Mammoth Lakes with races from a kids 1K to a 50K and the Dragon's Back Ascent, plus talks, live performances, community runs, awards, and prize money.

A Spartan obstacle weekend at Lake Elsinore Raceway features Sprint 5K, Super 10K, kids races, and multi-hour Hurricane Heat events on rugged, open terrain near a large natural freshwater lake.

A 3.1 mile trail event at Ascot Hills Park in Los Angeles with chip timing and views of Dodger Stadium and the Hollywood sign. Proceeds support the Wilson High School Fire and Police Magnet Cadet Program and Ascot Hills Park.

A multi-distance trail event at Lake Chabot Regional Park offering a Bay Ridge 100k, Firetrails 50 mile, and Golden Hills Marathon with UTMB Index status, published time limits, and finisher awards.

Trail ultras on Mt. Wilson in the Angeles National Forest offering 25K and 50K distances, technical single track, marked aid stations, panoramic views, and enforced cutoffs.

A point to point half marathon near Twin Lakes and Bridgeport, CA supporting Bridgeport Elementary School. The course ranges from about 7,100 to 6,600 feet and includes shuttle options, three water stations, and finish line refreshments and..

Trail races of 50K, 30K and 15K around Corriganville Park in Simi Valley with sandstone outcrops, oak savannahs, water sources and mountain and ocean views. A portion of proceeds supports the Challenged Athletes Foundation.

Trail marathon, half marathon and 5 mile at Andrew Molera State Park on September 26, 2026. The route follows Old Coast Rd with marked aid stations, a 6.5 hour cutoff and a 300 participant limit.

An ultramarathon and hike at Skyline Wilderness Park featuring a 3.3 mile loop with 550 plus feet of climbing and flexible 1 to 10 loop options. On-site awards, a raffle and a silent wine auction support the Pheo Para Alliance.

A trail event in San Marcos with a 10K, a not-timed 5K Fun Run, and a Kids Trail Trot that climbs to Double Peak summit; finishers receive wooden medals and shirts for the adult distances.

The Great Trail Race is a point to point event between Truckee and Tahoe City, California, on Saturday, September 26, 2026. Participants may choose gravel bike, mountain bike, or trail run and select either an Elite or Classic course.

Trail running in shaded redwood forest at Sanborn County Park on September 27 2026, with 10K, half marathon and 50K options; steep singletrack, shuttle parking, chip timing and specific mandatory gear for the 50K.

A themed run in Long Beach on September 27 with Half Marathon, 10K, 5K, a family mile and kids dash, ocean views, chip timing and a pizza themed finish line festival.

Trail races along the Western States Trail near Auburn, California on September 27, 2026. Distances include a half marathon, 12K and 5K with electronic chip timing and finisher medals and t shirts.

Trailblazer Race in Mountain View on September 27, 2026 features 10K and 5K races, a 3 mile walk, and a kids 1 mile fun run, with awards, finish line timing for 5K and 10K, and proceeds supporting the Friends of Stevens Creek Trail.

A self guided 50K point to point course from South Yuba Campground to Bear Valley near Nevada City, CA, run any time from October 1 to 31, 2026. Runners complete the course in one continuous effort and submit an activity link within one wee..

A multi-day timed event at Sand Creek Ranch in Los Olivos, CA where runners complete as many 3.4 mile laps with about 400 ft gain as they can. Camping and parking are free and aid stations are on course.

A multi-day loop race from Mammoth Lakes that circumnavigates a 760,000 year old caldera, crossing alpine lakes, volcanic terrain and Mono Lake tufas. The event offers prize money and uses permitted National Forest routes with a 108 hour cu..

Trail runs near Bear Valley and Lake Spaulding with a 50K and a 24 mile option. The 50K includes a summit loop with about 5,700 ft of gain, rocky sections on Signal Peak OHV Road, cupless aid stations, and finisher medals.

An annual 100 mile trail race through the San Gabriel back country in the Angeles National Forest, held since 1986. The 2026 edition uses a revised course with start and finish in Altadena and is a Western States and UTMB qualifying race.