Trail Running calendar near Irvine 2026-2027

A mountain 5K, 10K and half marathon around Green Valley Lake, CA, featuring mixed paved and dirt surfaces, multiple aid stations, chip timing, race awards, and proceeds benefiting The Children’s Forest.

Explore the trails at the Riley Park Trail Races in Orange County's Thomas F. Riley Wilderness Park. With distances from a 5k to a 30k and a 6-hour event, there's a trail run for various goals. All finishers receive a shirt and a medal.

Tackle the classic trails of the Santa Monica Mountains at the Bulldog Ultra. Choose from the challenging 75k, the historic 50k, or the 25k, all offering epic views. The event features a competitive prize purse, fully stocked aid stations,..

Conquer a steep 1000 foot climb at Snow Summit during this unique one mile mountain race. Enjoy high altitude views at 7000 feet elevation and a free chairlift ride back to the base.

A 5k trail run at Red Rock Wilderness near Silverado, CA featuring fire roads and single track, 300 feet of climbing, one aid station, a cupless policy, and no pets allowed.

Join this free community trail running festival in Los Angeles featuring social runs, a regional race expo, and prize raffles. Connect with local race directors and clubs while enjoying a 5k or 10k urban dirt trail run.

This premier trail race ascends 7+ miles from 6,000 feet to the 10,064-foot summit of Mt. Baldy on Labor Day. It includes a shirt, a finisher medal, and four aid stations, with a required 3.5-mile hike back after the finish.

Run into the sunset at Griffith Park. Choose from a 10-mile team relay, a scenic 5K solo race, or a kids' run. The event promises marked trails, panoramic city views, and a lively finish line atmosphere.

Experience a sunset run through the red sandstone cliffs of Topanga California. Choose between a timed 10k trail race or a non-competitive 4.5 mile hike featuring a post race beer garden and vegan tacos.

This 21 mile trail run near Yucaipa is postponed from September 2026. The challenging course features over 4,300 feet of climbing on Crafton Hills terrain, with aid station support.

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.

Bandit Ultra Trail offers three scenic distances through the mountains and canyons of Simi Valley, starting at the historic Corriganville Park. The 50K route features several aid stations with specific cut-off times. A portion of proceeds s..

The 11th annual Double Peak Challenge features a 10K and 5K run from San Elijo Park up to the panoramic summit of Double Peak. A Kids Trail Trot offers a sprint for younger participants. All finishers receive a medal.

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.

This historic point-to-point 100-mile race traverses the San Gabriel Mountains from Wrightwood to Altadena. With steep climbs and rocky trails, it's a classic, challenging endurance run. Entry is by lottery, and finishers earn a unique plaq..

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.

Run a scenic 5K on the shaded, groomed horse trails of Palos Verdes Peninsula. The event supports Strides in Recovery, a nonprofit helping people in addiction treatment through running. Participants receive a medal, t-shirt, and can enjoy a..

That's No Moon Trail Races offer a rugged adventure on remote, challenging terrain in California's Santa Ana Mountains. Runners can choose from 50-mile, 50K, or 30K courses through the Cleveland National Forest. The event includes well-supp..

Run on the Cahuilla Indian Reservation in Anza, California, in support of tribal youth programs. Choose from ultra distances on a 2-mile loop or a half marathon tour of reservation roads. The event offers camping, real food aid, and a focus..