Trail Running calendar near Yorba Linda 2026-2027

An urban event in downtown Los Angeles with a stair climb up 1,664 steps at the U.S. Bank Tower, an Urban Hike past major cultural sites, a Heroes Challenge category, and a virtual participation option.

A weekend of Spartan obstacle races at Lake Elsinore Raceway featuring Sprint and Super distances, kids races, and multi-hour Hurricane Heats on rugged trails beside Lake Elsinore.

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 trail ultramarathon at Mt. Disappointment in the Angeles National Forest offering 25K and 50K options. Technical single-track courses include substantial elevation gain, staffed aid stations, and awards for top finishers.

Trail races of 50K, 30K and 15K through Rocky Peak, Las Llajas and Tapo Canyon, held at Corriganville Park with on-course aid stations and event proceeds benefiting a charitable foundation.

A community running event in San Marcos on September 26, 2026 offering a 10K competitive race, a 5K fun run and a free kids trot, with race shirts, wooden medals and an on-site expo.

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.

A single-day *100 mile* ultramarathon through the San Gabriel backcountry, held since 1986; the event features volunteer-run aid stations, trail work programs, and qualifying status for major ultraraces.

A 9.1 mile loop from the Mt Baldy ski area to the 10,064 ft summit of Mt San Antonio via exposed ridgeline and technical alpine trails, then back to the parking lot. The race is capped at 500 runners.

A 5K at Ernie Howlett Park on the Palos Verdes Peninsula with a shaded horse-trail course, in-person and virtual options, and a fundraising entry where raising $100 covers registration and benefits Strides in Recovery.

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 of 50 Mile, 50K and 30K through Cleveland National Forest near Silverado CA on remote forest roads with significant climbing, staffed aid stations, drop bag support, and specific crew and pacer rules.

Ruff Run California on 10/17/2026 in Phelan, CA presents a 20 acre obstacle course for people and their dogs with over 20 obstacles, 4K and 1K options, and an after party with music, games and vendors.

A multi distance event on the Cahuilla Indian Reservation near Anza, California featuring a runnable 2 mile loop, timed 6 12 and 24 hour events, a 100 mile race, a half marathon, and a tribal 5k. Net proceeds support local youth programming..

Experience a diverse weekend of trail running and off road duathlon at San Diego’s Scenic Lake Hodges. Choose from distances ranging from a kid’s mile to a 50K ultra marathon or tackle the mountain bike and run challenge.

Trail races at Vasquez Rocks in Agua Dulce on October 17, 2026 offer looped 5K, 10K, 15K and Half Marathon+ courses across rocky, sandy and single track terrain. The 15K and Half Marathon+ include a roughly 500 foot black hole tunnel.

A trail running event in October at Hahamongna Watershed Park offering 5K, 10K and a hilly half marathon across mixed single track and fire roads.

A revived 200 mile endurance run around San Diego County featuring coastal, urban, mountain, and desert terrain. Field is limited to 24 experienced ultrarunners who have 82 hours to complete the course and must use a crew.

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.