Trail Running Calendar California 2026-2027

A memorial, self-supported marathon in San Diego with a counter-clockwise course, no event aid or official timing, a seven-hour cutoff, and a Garmin/GPX route that passes Torrey Pine North amenities.

A timed half marathon through eight Napa Valley wine estates finishing in Yountville. The event includes a finish line Wine Village with live music and complimentary wine tastings.

A community trail run and hike on May 8, 2027 at the Point Arena and Stornetta Lands, co-hosted by ACORN and Pacific Community Charter School. Proceeds support the Students Protecting the Coast environmental education program.

Trail event at Crystal Cove State Park on May 8, 2027 with 50K, 25K and 5K routes on dirt roads and single track, ocean views, participant shirt and finisher mug, supporting the John Wayne Cancer Foundation.

A multi-distance trail event in Susanville, California organized by Lassen Land and Trails Trust. Courses run mostly on single-track through pines and meadows with stocked aid stations and a cupless race policy.

A multi day trail ultramarathon near Los Olivos, CA offering several timed and distance options on dirt loops with aid stations about every 5 miles and onsite camping; capacity is limited and entries are nonrefundable.

A high altitude Spartan weekend at Big Bear Mountain Resort featuring Sprint, Super, Beast and Kids races, plus a Trifecta option to complete all three main distances in one weekend.

Trail runs at Skyline Wilderness Park on May 15, 2027, offering 10K to 50K courses with substantial climbing, spaced aid stations, a cupless policy, and new trails through Napa Open Space.

Trail event in O'Neill Park, Trabuco Canyon offering multiple distances from 10k to 50k on May 15, 2027. Registration opens Dec 1, 2026 and entries are nonrefundable with rollovers allowed for cancellations due to weather or fire.

A Napa Valley trail ultramarathon using Skyline Wilderness Park and Suscol Headwaters trails, offered as a solo ~50-mile challenge and a one-loop ~25-mile option, with cupless aid stations, drop bags, and specific crew and pacer rules.

A trail 10K at Big Bear Mountain Resort on singletrack through high altitude pine forest, with technical climbs, descents and views of the Southern Sierra. The weekend also includes Spartan obstacle races and spectator options.

A 5K mud and obstacle run at Mahon Ranch in Elk Grove on May 16, 2027, with adult and KIDZ family waves, required signed waivers and photo ID for adults, spectator festival access, and on-site event photography.

Run for Amma is a charity trail event at Skyline Ridge Open Space Preserve in Los Gatos offering 50K, 30K and 10K courses, with all registration proceeds donated to a UCSF cancer research lab.

A weekend of Spartan obstacle races at Toro Park near Salinas with Sprint, Super and kids distances on wooded, hilly trails. Team entries, volunteer options, spectator access, and a service member discount are available.

A fully supported trail event in the Angeles National Forest featuring a 50k and a half marathon on technical singletrack, high elevation terrain, aid stations, free race photos and a finish festival with food and massage.

An 8 mile uphill race climbing 4,600 ft from Keeler to the historic Cerro Gordo town, finishing with a mountaintop barbecue, music, and shuttles back down. Spectator passes include the shuttle ride and food.

Trail races of 10K, half marathon, and marathon at Toro Park, Salinas on May 30, 2027, over rocky trails and dirt roads with summer temperatures around 16ºC and an average altitude of 520 meters.

Trail runs of 31.1 miles and 12.4 miles through Sierra National Forest, with spaced aid stations, onsite pre-race lodging and dinner, and no pets on course or campus.

A trail-based marathon relay and an 8K in Griffith Park on June 6, 2027, featuring a true loop course with a long climb, chip timing, aid stations, race photos and a festival area with DJs and food trucks.

Tahoe 200 is a 200.4 mile loop ultramarathon circling Lake Tahoe on National Forest lands, largely on the Tahoe Rim Trail. The route has 32,093 feet of elevation gain, 12 full aid stations and is scheduled June 21 to 25, 2027.