Trail Running Calendar California 2026-2027

Community races at Thousand Hills Ranch include a 5K, 10K and Kids Mile on mixed dirt and paved ranch roads. The event benefits Central Coast Athletics Foundation and 17 Strong and features a victory lap, festival, awards, and team competit..

A 6.45 miles trail race in Annadel State Park organized by the Empire Runners Club, held in early September with staggered age and gender starts, limited to 100 runners and awards for the top 13 finishers.

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.

Experience the trails of China Camp State Park with a selection of distances including a 5K 10K and Half Marathon. Participants enjoy a post race festival with beer steins custom medals and local snacks.

A point-to-point trail run around Emerald Bay in Lake Tahoe of roughly 7 to 7.5 miles (11 to 12 km). The mostly single-track course has moderate climbs, granite steps, scenic lake views, parking options, and a shuttle back to the start.

A weekend running festival in Mendocino Woodlands Park featuring a mostly single-track 6-mile loop, two aid stations, and choices of half-marathon, 10K, or 6- and 12-hour timed formats, plus on-site camping and weekend meal options.

Tough Mudder Big Bear on September 12, 2026 at Bear Mountain features 5K and 10K obstacle courses at high altitude, named obstacles, finisher medals and apparel, spectator passes, and options for volunteers and group packages.

A chip-timed one-mile uphill trail race to the top of Pincushion Mountain in Friant, CA, with awards and finisher items. A Mountain Goat edition allows multiple timed ascents within a four-hour window and includes special awards.

A Stadion 5 km obstacle race at Angel Stadium of Anaheim on September 12, 2026, featuring 20 obstacles, a kids race and spectator access inside the ballpark. Ticketed entries and race day services are listed for participants and visitors.

A September 12, 2026 trail event in Berkeley featuring 10K, half, 35K and 50K courses through Tilden and Wildcat Canyon with chip timing, regular aid stations and a cupless aid policy.

An outdoor mud obstacle run near Redding, CA, with a just-under 5 km course through fields, hills and creek crossings. The family-oriented event includes vendors, children's activities, food, drinks and event swag.

Trail trail races at Stevens Creek Reservoir in Cupertino on September 12, 2026 include a Half Marathon, 11K and a 2.5 mile Lollipop Loop. The USATF sanctioned event is hand timed, capped for the longer distances, and supports wildfire reli..

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 trail running event at Calero County Park offering distances from a kids run to a 50K across single-track and dirt roads, with named aid stations, drop bag support, bib color assignments, and time limits for longer races.

A Last One Standing event in Bradley, California on September 18, 2026 where runners repeat a 4.18 mile loop each hour and must finish each loop within the hour to continue. The final runner to complete a loop is declared the winner.

Mile Madness is a looped trail endurance event in Auburn, California, held September 18-21, 2026. Timed events run from 3 to 72 hours with a 0.75 mile loop and options including a 100 mile race plus on-site aid and amenities.

Trail runs at Granite Beach on Folsom Lake with new 10 mile and 5K courses, aid stations, age group awards, a finisher beer glass and a postrace meal.

Multi-day trail running on a private cattle ranch in Bradley, California with looped 10 km single track and events from 5 km to 48 hour. Onsite primitive camping, nightly bonfires and live music with aid stations about every 3 miles.

A community run at George's River Ranch along the San Joaquin River on September 19 2026. Events include a 10K trail, 5K, 2 mile and a kids quarter mile with registrations opening June 1 2026.

A Topanga trail event featuring a rugged 10k with about 1,360 ft of climb and a non-timed 4.5 mile Hiker's Delight. The courses run mostly on fireroads with a section of singletrack and include aid stations, food, and post-race amenities.