Trail Running calendar near Green Valley Lake 2026-2027

An evening trail event in Griffith Park with 10 mile relays for teams of 2 or 4, a 5K solo race, a 1 mile kid run, and a free agent leg, on scenic, well marked courses with chip timing and on-course aid.

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.

This trail 5K takes place at Ascot Hills Park with views of the Hollywood Sign and Dodger Stadium. The chip-timed event benefits a local high school cadet program. A virtual race option is also available.

Traverse technical single track through the Angeles National Forest on this historic mountain race. Choose between 25K and 50K distances starting from the iconic summit of Mount Wilson.

A San Marcos trail event with a 10K, 5K and Kids Trail Trot that climbs to Double Peak’s summit at 1,558 feet; bibs, wooden medals and shirts are listed as finisher items, and registration closes Wed, Sep 23 at 12:00 PM PT.

A seaside themed run in Long Beach offering 5K, 10K, half marathon and family distances with chip timing, free race photos, finish line pizza and a costume contest.

A historic point to point 100 mile ultramarathon through the San Gabriel Mountains from Wrightwood to Altadena with about 21,610 feet of climb. Entry for 2026 was by lottery with qualifier and trail work requirements.

Experience a 9.1 mile mountain race at Mt Baldy featuring nearly 4000 feet of vertical gain. High altitude trails lead participants to the 10064 foot summit for a true alpine test in the Angeles National Forest.

A two day trail festival in Big Bear Lake, California featuring five distances and varied terrain around the lake. The 2026 event is the UTMB World Series Americas Major and serves as a dual qualifier for UTMB Finals and Western States.

Trail races in Cleveland National Forest with 30K, 50K, and 50 Mile options over remote, rough terrain; staffed aid stations, mandatory self-sufficiency, and specific crew and pacer rules.

An obstacle event in Phelan, California where people and their dogs navigate a 20 acre course with over 20 obstacles, including mud, water and problem solving. The program also offers a 1k walk/run and a volunteer option.

A multi distance event on the Cahuilla Indian Reservation in Anza, California. It uses a runnable 2 mile loop for fixed time races and a 100 mile event, with camping, limited RV spots and a real food aid station, fundraising for tribal yout..

A trail race at Vasquez Rocks Natural Area Park on October 17, 2026 offering Half Marathon+, 15K, 10K and 5K looped courses over rocky single track, a 500 foot tunnel on the Pacific Crest Trail, multiple aid stations, and finisher swag.

Experience scenic singletrack and natural terrain at Hahamongna Watershed Park in Pasadena with options for a trail half marathon, 10K, or 5K on Sunday, October 18, 2026. Perfect for trail runners seeking a challenging yet runnable course.

A revived 200 mile endurance run based in Escondido, California, that circumnavigates San Diego County over varied terrain. Field limited to 24 experienced ultrarunners; crews are required and profits go to a Native American charity.

A trail race weekend at Los Coyotes Reservation featuring Single Loop, 6H Ultra and 24H Ultra options across desert and alpine trails. Ragnar Village provides camping, bonfires, food trucks and evening activities.

A team trail relay at Los Coyotes Reservation on October 23 and 24, 2026 featuring desert and mountain single track, a 112.8 mile course shared across teams, and on site camping plus glamping at Ragnar Village.

A trail running event at Caspers Wilderness Park on October 24, 2026, offering 10k, half marathon, 35k, marathon and 50k courses. Courses are described as marked and supported, with an athlete guide and past results available.

Run an 8-hour loop course on a scenic 3.7-mile trail in Wildwood Canyon State Park. The event features an aid station, vendors, and live music. An after-party follows at a local brewery.

A multi-distance trail event at Lake Perris held during a Dia de los Muertos observance. The 200 mile race features over 44,000 feet of climbing, a 96 hour cutoff, and cash prizes for top finishers.