Trail Running Calendar California 2026-2027

Born To Run Ultra Marathon in Los Olivos CA on May 16, 2026 offers distances from 10 miles to 100 miles plus 3- and 4-day formats; registration opens December 1, 2025.

Trail races at O'Neill Park in Trabuco Canyon on May 16, 2026 offer distances from 10k to 50k. Registration closes May 1 and entries are non refundable; weather or fire cancellations may roll over to a makeup date or another KHraces race.

High altitude trail ultras near Bishop, California, on dirt roads and single-track with aid stations every 3 to 7 miles. Multiple distances to 100K, handmade finisher medallions, and proceeds support local youth outdoor programs and search..

Experience 360 degree views of the Bay Area at Wildcat 2026 in El Sobrante. This scenic event features a Half Marathon, 10K, and 5K as well as a remote participation option.

Wild Rose Half Marathon & 5K The Wild Rose Half Marathon & 5K takes place in Roseville, California. The event starts and finishes at the Moksa Barrel House on Foothills Boulevard. The event offers three distances: Half Marathon: Th..

Run along the iconic LA River Path in Canoga Park with a fun, 80s martial arts theme. Choose from a 5K, 10K, or half marathon, or join virtually. Expect themed music, costumes, and a finisher's medal.

Experience a technical trail event in the Cleveland National Forest featuring rocky scrambles and OHV trails. Choose from four distances ranging from a 5 miler to a 50 km ultra through diverse California terrain.

A 13 mile point to point trail race in San Jose across Almaden Quicksilver Park and Sierra Azul Open Space Preserve, with bus transport to the start and a 5.5 hour time limit. Race day registration and bib pick up are available.

Experience high altitude trail running at Big Bear Mountain Resort with a scenic 10k course. Run through pine forests and technical singletrack while enjoying expansive views of the Southern Sierra.

Mud Factor Sacramento is a 5K mud and obstacle run at the 300 acre Mahon Ranch in Elk Grove on May 17, 2026. The event includes adult and KIDZ family waves, a festival area with paid spectator access, and required signed waivers.

A multi-distance loop race on a flat, one-mile dirt and grass loop at a private ranch in Riverside. Options run from 3-hour events to a 100-mile race, with camping, relay teams, and event awards.

This unique 8-mile race climbs 4,600 feet up a historic 19th-century mining road to the Cerro Gordo ghost town. At the summit, a celebration with BBQ and music awaits before a shuttle ride back down. All finishers receive a shirt and medal,..

Experience the final 70 miles of the Western States trail during this three day training event featuring supported runs of 19, 20, and 32 miles through iconic canyon terrain and mountain climbs.

A trail race at China Camp State Park in San Rafael offering 5K, 10K, and half marathon courses with scenic single track, limited to 275 entrants and staffed aid stations. Registration deadlines determine shirt guarantee and refund credit r..

A mountain trail race in Sierra Madre on May 23, 2026 featuring an 8.6 mile out-and-back course from Kersting Court to Orchard Camp, a Kids Fun Run, and community-led trail repair efforts supported by the Fletcher Trail Maintenance Fund.

The Páli Peak Trail Run takes place at the scenic Rio Bravo Ranch in Bakersfield. Choose from a 5K, 10K, or 21K half marathon, with proceeds supporting a college scholarship fund. Runners receive a shirt, medal, photos, and post-race snacks..

A trail event on the El Dorado Trail in Placerville on May 23, 2026, offering distances from a kids run to a half marathon, paved and unpaved sections, aid stations, color-coded course markings, and medals for finishers.

Return to Hahamongna Watershed Park on May 24, 2026 for a day of team relays and solo challenges. Choose a 50 km relay with teams of up to five, a solo 50 km ultra, or a 10 km fun run amid scenic Pasadena trails.

Join the Forever Brave event in Valencia for a 5k, 10k, 15k, or half marathon at West Creek Park. Enjoy a loop-based course with finisher medals and professional timing for all participants.

A 5k trail run at Black Star Canyon in Silverado, California, with mixed fire road and single track, 390 ft elevation gain, one aid station, a cupless policy, and pre-run access restricted to authorized days.