Trail Running Calendar California 2026-2027

Run scenic single track trails, hills and streams at Bothe Napa Valley State Park in the intimate 300 runner Napa Valley Trail. Choose marathon, half marathon or 10K and get a race shirt plus finisher medals for full and half.

Run peaceful redwood trails in Oakland with distances from a kids 50 yard dash to 50K ultras, plus family friendly 5K and marathon options. Enjoy scenic singletrack, stocked aid stations and springtime forest views.

A community fundraiser in downtown Placerville on March 21, 2026 offering live and virtual 5K and 10K options to support New Morning Youth & Family Services and other local nonprofits serving seriously ill children.

Explore oak and chaparral trails in the Santa Ana foothills at the Whiting Ranch Trail Races. Choose 6k, 10k, half marathon or 30k, enjoy marked, supported courses, event swag, and a post race beer from Docent Brewing.

Join the inaugural Hill Canyon Trail Trot 5K in Camarillo, a creekside run through canyon trails and oak lined paths with a free Kiddie K. Proceeds support the Stepping Stones Riding Program and low cost horse experiences.

A rugged high desert half marathon and 10K in Pioneertown with views of the Sawtooth Mountains. Proceeds support the John Wayne Cancer Foundation and entries include chip timing, aid stations, a finisher mug and a finisher shirt.

Join the Lag Bon 10K trail run in Fairfax on March 22 to celebrate World Water Day and support Evidence Action's Safe Water Now program. Limited to 100 runners, the technical 10K features stairs, roots and muddy singletrack and runs rain or..

Scenic half marathon in La Honda at Skyline Ridge, with runnable single track and fireroad through woods and hills offering ocean and bay views. Proceeds benefit The Hatuey Project and entry fees are matched to double the gift.

Run the Coast to Crest 10K or 5K on scenic Del Mar trails, with mostly flat, hard packed dirt and wide lagoon views. This out and back race is the final Championship Qualifier of the Sunshine Series and finishes with a fun downhill.

Join Western Pacific 2026 at Quarry Lakes in Fremont for scenic half marathon, 10K and 5K routes along the Western Pacific and Alameda Creek trails. Mostly flat trails welcome runners, walkers and remote runners.

Scenic, technical trails in Auburn offer distances from 5K to a rugged 35K with sections of the Western States trail and landmarks like No Hands Bridge. Small field with aid stations but the race is cupless so bring your own bottle.

Run Griffith Park Trail Marathon in Los Angeles with distances from 10K to 50K and a scenic marathon route up toward the Hollywood sign on single track and fire roads. Aid stations and race morning bib pickup keep runners supported.

Run the scenic Merced River Canyon in Briceburg CA on Saturday March 28 2026 with two race options. Pick a 5 mile out and back on mostly flat foothill roads or the 9 mile climb up Burma Grade for a bigger challenge.

Run scenic single track trails along Folsom Lake through oak and grass, with technical sections and shaded viewpoints. Choose from half marathon, 8 mile, 10K or 5K, grab same day registration and a commemorative medal at the finish.

Challenge yourself at the Billy Goat Mountain Climb on April 4, 2026 in Cleveland National Forest near Silverado CA. Choose the 17 Miler Silverado Loop, Half Marathon or 10K and tackle rugged trails with big climbs and creekside scenery.

Limited to 400 runners, the Golden Gate Headlands Marathon, Half Marathon and 10K invites trail lovers to Mill Valley, CA. Run single track trails and fire roads with sweeping views of the Golden Gate Bridge, San Francisco Bay and Pacific.

Take on Mount Diablo on April 4, 2026 with trail distances from 5K to 50K, including a challenging ultra half that often exceeds 13.1 miles. Organized by Brazen Racing, the event supports Save Mount Diablo and offers remote entries and post..

Run the scenic American River Parkway from Folsom to Auburn with 50, 25 or 10 mile options. Expect aid stations, a tech shirt and finisher medallion, plus a festive post race party with food and a beer garden.

Hit the trails at Crystal Cove for Rock It in El Moro Canyon on April 4, 2026, choose a scenic 6K or challenging 10 Miler with climbs, descents and Pacific Ocean views. Run or hike, and enjoy a shirt, race photos and a finisher medal.

Hoppy Easter invites runners to tackle 5k, 10k, 15k and half marathon routes through Griffith Park, Los Angeles on April 4, 2026. Enjoy scenic trails, a custom finisher medal, free photos and snacks for a festive spring run.