Trail Running calendar near Simi Valley 2026-2027

We have found 88 Trailruns within 80 miles of Simi Valley. See below where and when you can find the races.

Hot to Trot at Griffith Park on July 18, 2026 features 5k, 10k, 15k and half marathon options on a marked horse trail, with aid station support, finisher medals, free photos and results posted after the event.

Join this summer running event at Whittier Narrows Recreation Area featuring 5k, 10k, 15k, and Half Marathon distances. Enjoy a scenic loop course with finisher medals and snacks included for all participants.

Experience a historic cross country tradition at Elysian Park in Los Angeles. This long-standing event features age group awards and prize money while supporting youth running programs and local park foundations.

Join the SoCal Summer evening 6K or 12K at Lower Arroyo Park in Pasadena on July 31 2026 and celebrate after with tacos and drinks. Scenic park routes and friendly vibes make this a perfect summer night run.

August 2026

A Malibu Creek State Park trail event offering 25k, 50k and a three-loop 75k ultra with substantial climbing, multiple fully stocked aid stations, finisher medals and prize purses for top 50k finishers.

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.

A free, one-day community trail running festival in Los Angeles on August 29, 2026 with a group run in 5K and 10K options, an expo with vendors and race directors, food, and a raffle showcasing local running resources.

September 2026

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 with 20 obstacles at Angel Stadium of Anaheim on September 12, 2026, plus a kids race and spectator options; the Stadion shows an average duration of about 1 hour 32 minutes and a 4.8 rating from 40 testimonials..

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 Topanga trail event featuring a rugged 10k with major climbs and coastal views plus a non timed 4.5 mile Hiker's Delight. The day includes aid stations, a beer garden, massage services and free course photography.

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 trail running event at Corriganville Park in Simi Valley offering 50K, 30K and 15K courses across Rocky Peak, Las Lljas, and Tapo Canyon with varied terrain, course maps, and proceeds benefiting Challenged Athletes Foundation.

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.

October 2026

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 loop-based endurance event on Malibu's Chumash Trail with a 3-mile loop and about 1,250 ft gain per loop. It offers two divisions including X HEAVY with escalating weight and uses the motto "Every loop heavier. Every loop harder. Only one..

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..

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.

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