Trail Running calendar near Green Valley Lake 2026-2027

The 61st Mt Baldy Run to the Top on September 7, 2026 is a fundraising mountain trail race in the Angeles National Forest covering about 7 miles with 4,000 feet of ascent to the 10,064 foot summit, with proceeds aiding local services.

Tough Mudder Big Bear on September 12, 2026 at Bear Mountain features 5K and 10K obstacle courses at high altitude, named obstacles, finisher medals and apparel, spectator passes, and options for volunteers and group packages.

A Stadion 5 km obstacle race at Angel Stadium of Anaheim on September 12, 2026, featuring 20 obstacles, a kids race and spectator access inside the ballpark. Ticketed entries and race day services are listed for participants and visitors.

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.

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 Spartan obstacle weekend at Lake Elsinore Raceway featuring Sprint 5K, Super 10K, kids races and Hurricane Heat formats. Expect rugged trails, mud, varied terrain and onsite spectator options.

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.

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 historic point to point 100-mile ultramarathon through the San Gabriel Mountains, the 36th Angeles Crest AC100 tests endurance with over 21,000 feet of climbing and a 2026 course routed to finish at Loma Alta Park in Altadena.

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 two-day mountain trail festival in Big Bear Lake with five race distances, varied alpine and desert terrain, UTMB World Series Major status, and opportunities for qualification to major trail events.

On October 10, 2026 That's No Moon offers 50 Mile, 50K and 30K races in the remote Santa Ana Mountains near Silverado. Courses run on forest roads with significant elevation gain, staffed aid stations, and mandatory self-sufficiency require..

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 running event on the Cahuilla Indian Reservation near Anza, CA, featuring a runnable 2 mile loop, fixed-time races and a 100 mile option with a buckle; proceeds support the tribe's Youth and Family programs.

A trail race at Vasquez Rocks in Agua Dulce on October 17, 2026 offering Half Marathon+, 15K, 10K and 5K loops through rock formations, canyons and a 500 foot tunnel on the Pacific Crest Trail with multiple aid stations.

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 200-mile multi-day endurance run around San Diego County from October 23–26 with an 82-hour cutoff, mandatory crew support, a 24-runner field limit, and entry fees that include a charity donation.

An individual trail event at Los Coyotes Reservation on October 23-24, 2026 offering a 3.1 mile Yellow Loop plus 6 hour and 24 hour ultra formats on the relay loops, with camping, food trucks, bonfires, and festival amenities.