Trail Running Calendar California 2026-2027

A one-day event at Hahamongna Watershed Park on May 24, 2026, offering a 50K team relay, a 50K solo ultramarathon, and a 10K Fun Run for solo participants.

Multiple looped trail distances from 5k to a half marathon at West Creek Park, Valencia on May 24, 2026, with aid stations each loop, finisher medals, goodie bags, free photos, and posted results.

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.

An obstacle race weekend at Toro Park near Salinas on May 30-31, 2026, featuring a 5 km Sprint with 20 obstacles, a 10 km Super with 25 obstacles, kids races and trail events across wooded, hilly coastal terrain.

A trail running event at Point Pinole on May 30, 2026, offering a half marathon, 10K and 5K. The original Brazen Racing event welcomes runners and walkers and includes bib pickup, posted results, free photos and volunteer roles.

A spring trail event in the Angeles National Forest offering a 50k and a half marathon across Pacifico Mountain with technical singletrack, multiple aid stations and a finish festival. The 50k awards Sterling Silver Tickets and a course rec..

Experience a technical trail race through the redwood groves of Joaquin Miller and Redwood Regional parks. Choose from multiple distances ranging from an 8K to a 50K ultra marathon on accurately measured courses.

San Mateo PAL's May 30, 2026 community event at Seal Point Park features a 5K run/walk, a 10K run, a free Wellness Fair, and a yoga option. Race entries include a t-shirt and finisher medal, and vendor booths are available.

A dog friendly 5K and 1 mile event at North Tahoe Regional Park with an expo, non competitive activities, and a fundraiser supporting local animal rescue and veterinary care.

Annual 5K and 10K run and walk in Rolling Hills Estates on May 30, 2026, with a scenic route on the city bridle trails and awards for overall and age-group first place finishers.

These trail runs explore the beautiful Sonoma Coast State Park. The courses traverse a scenic ridgeline with ocean views and summit Red Hill. The event will return in 2027 with a planned new location in Monte Rio.

A multi-distance trail event at Calero County Park in San Jose on May 30, 2026, featuring single track, dirt paths and hilly terrain up to 50K, with aid stations, free parking and drop bag support for the 50K.

Free, social group run by Aravaipa at El Moro and Laguna Coast Wilderness Park in Newport Coast on May 30, 2026. The route is about 5.5 miles with roughly 500 feet of ascent, some rocky sections, and post-run snacks and a raffle.

An evening trail event at Dos Rios State Park near Modesto offering 3 mile and 5 mile runs on fire roads along the Tuolumne River. Free registration and an informal post run gathering with donations supporting park rangers.

The Toro Park Trail Run offers 10K, half marathon, and marathon distances on the rocky trails and dirt roads of California's Toro Park. The summer event features rolling golden hills and oak trees. It is held as part of a Spartan festival w..

Trail races on May 31, 2026 in Arnold, CA offer distances from 5k to a new 50k ultra across the Arnold Rim Trail and White Pines Lake Park, with proceeds supporting the Arnold Rim Trail Association.

Global Running Fest at Sports Basement Berkeley on May 31 features free road, trail, and kids runs, brand shoe demos, live music and raffles with over $5,000 in prizes. Beer sales benefit the youth program Running for a Better Oakland.

A movement-focused running event in San Luis Obispo with in-person and worldwide virtual options. Timed loop races and a 5.5 mile King of the Mountain loop plus a post-run ceremony offer a finish without alcohol.

A trail event near Yosemite offering a **50k** and a **20k Fun Run**, with staffed aid stations, camp lodging, a preordered pre-race dinner, and finisher medals for finishers.

Malibu Canyon Trail Races at Point Mugu State Park in Malibu, CA on June 6, 2026 offers trail distances from a half marathon to 100K. The event is sold out with a waitlist and has volunteer shifts that can be traded for a free KHraces entry..