Trail Running Calendar California 2026-2027

Aztlan XC Classic is a 5K event in Elysian Park, Los Angeles on July 25, 2026, with youth and adult race categories and differing registration options. Proceeds support the Aztlan Athletics Foundation's camps and scholarships.

Trail running at Calero County Park with multiple distances across single track and dirt paths, significant climbs, aid stations and free parking at the park.

A trail run in Auburn on July 26, 2026 featuring 10.5 mile and 5.9 mile routes through single-track canyon trails, canal sections and dirt roads, with a tech shirt, finisher medal and post-race food and beer for those 21 and older.

A 135 miles invitational ultramarathon from Badwater Basin to Whitney Portal across Death Valley and three mountain ranges, featuring about 14,600 feet of ascent, mandatory support crews, checkpoint time cut offs, and a 45 hour course limit..

An evening trail event in Pasadena's Lower Arroyo Park offering 6K and 12K routes with chip timing and aid stations. The finish includes tacos and drinks and runners receive a commemorative shirt and wooden medal.

Scenic 5K, 10K and half marathon in Green Valley Lake with lakefront sections, forest service roads, aid stations and chip timing. Proceeds support youth environmental programs and trail maintenance.

A 5K run or walk with a 282 step climb at Baldwin Hills Scenic Overlook in Culver City that benefits the Aztlan Athletics Foundation. Registration runs from 10/10/2025 to 12/31/2025 with a $45 fee.

Experience trail running in Orange County with several race distances ranging from a 5k to a 6 hour timed challenge. Navigate a scenic 3.3 mile looped course with multiple early bib pickup options available.

A trail race in the Marin Headlands with 8K, half, 30K and 50K options along coastal single-track and fire roads, marked courses, cupless aid stations, and a 350 runner capacity.

A multi-loop trail marathon near Soda Springs, CA covering about 26.4 miles and 4,300 ft of gain across Royal Gorge land, with a central aid station, solo and relay options, parking at Soda Springs Ski Resort, and shuttle service to the aid..

A loop trail event at Lake Chabot Marina on August 2, 2026 offering a 50K and a half marathon with substantial climbing, community-run aid stations, finisher swag and awards; part of the P-USATF Grand Prix and UTMB index.

Mountain trail race at Balsam Forebay, Shaver Lake offering 14K (8.7 mi) and 8K (4.97 mi) courses with notable climbs and Sierra views. Field capped at 250; includes shirts, finisher medals, awards, and post-race refreshments.

A time-based trail event at Napa’s Skyline Wilderness Park with 12-, 6-, and 3-hour formats plus relay teams. Main loop is about 4.1 miles with ~815 ft elevation per lap and a 0.34-mile short loop opens for the final 40 minutes.

A high Sierra trail event at Horse Canyon Trail Junction offering 5.6M, 10.5M, 21M and 50K options across alpine loops. The course sits near 7,400 feet with two aid stations, limited field size, and variable mountain weather.

A trail running event on Aug. 8, 2026 in Gilroy, California through redwood groves and peak viewpoints. Distances include a 5K, 10K and half marathon with significant elevation gain, and proceeds support youth scholarships.

A trail event in Lafayette, CA on August 8, 2026 offering a half marathon, 10K, 5K and remote entry, with chip timing, finisher medals, event shirts, hiker-friendly options and a final shaded single track descent.

Operation YOSEMITE 2026 is an in-person trail event in Mono County, California on August 8, 2026, offering four distances from 6 to 22 miles with a 20 lb dry load and specified elevation gains.

SAR Wild Run is a mountain trail event near Shaver Lake supporting the Fresno County Sheriff’s Search & Rescue Team. Races and a family hike range from 5K to a trail half marathon, and a virtual option includes mailed finisher items.

The 50th annual Pinecrest Run in Pinecrest, CA features a five mile course around Pinecrest Lake plus a one mile pavement race. Proceeds support Pinecrest Expedition Academy and pets are not allowed.

A trail running event at Malibu Creek State Park offering a 50k (about 29.4 miles) and a 25k (about 14.8 miles). Fully stocked aid stations, a $3,500 50k prize purse, finishers medals, post race food and a beer garden.