Trail Running calendar near Santa Monica Mountains 2026-2027

A community 3 mile fun run in Norwalk on September 5, 2026, organized by Cerritos High School alumni to support the school and honor local Dairy Valley history. In-person and virtual options are available.

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.

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.

A trail event in Topanga featuring a rugged 10k with 1,360 ft of climb, a shorter Hiker's Delight route, aid stations, a beer garden and postrace amenities.

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 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 trail running event at Corriganville Park in Simi Valley with three distances and aid stations, crossing Rocky Peak and Tapo Canyon on varied sandstone and oak savannah terrain.

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.

Back On The Ranch Trail Run in Los Olivos CA runs October 2 to 4, 2026 and offers timed trail formats from three hours to 48 hours. The event is organized by AllWeDoIsRun, a promoter of California Central Coast trail events.

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 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.

The ABWR Half Marathon - Valencia will take place in Santa Clarita on Sunday 4 October 2026. You can run between 5 and 13 miles.

A Halloween themed running event in Valencia offering 5k, 10k, 15k and a half marathon on a marked out and back trail. Each loop has an aid station and registration includes a finisher medal, photos, and posted results.

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..

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.

No Name Trail Races in Agoura, CA on October 24, 2026 feature trail courses through Chesebro Canyon, including a 50K, a 14.1-mile half-marathon, and a 3.6-mile 5k, with aid stations, finisher medals and post-race refreshments.