Trail Running Calendar California 2025-2026

Run the Western Pacific at Quarry Lakes, Fremont on March 28, 2026. Choose a half marathon, 10K or 5K on mostly flat, scenic Alameda Creek and Western Pacific Trail, with virtual entries and free race photos.

Run scenic single track and fire roads around Auburn, including stretches of the historic Western States trail and the No Hands Bridge. Choose from 35K, half marathon, 10K or 5K distances, enjoy aid stations and a finisher medal for all.

Run the Griffith Park Trail Marathon in Los Angeles, a scenic out and back through single track trails and fire roads that reaches the Hollywood sign summit. Options from 10K to 50K make it perfect for beginners and ultrarunners alike.

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.

Challenge yourself at the Billy Goat Mountain Climb near Silverado with steep climbs and sweeping views through Cleveland National Forest. Choose a 17 mile loop, half marathon or 10K and finish with a medal, race shirt and post race snacks.

Run scenic single track and fire roads above the Golden Gate Bridge at the Golden Gate Headlands Marathon, Half Marathon and 10K on April 4, 2026. Limited to 400 spots, this race delivers sweeping bay and ocean views.

Run the scenic trails of Mount Diablo near Walnut Creek on April 4, 2026 with Brazen Racing, offering distances from 5K to 50K. A portion of entry fees benefits Save Mount Diablo so you can race and help protect the park.

Run scenic trails along the American River Parkway with 50 mile, 25 mile or 10 mile routes all finishing in Auburn. Enjoy race swag, a handcrafted finisher medallion, on course fuel, and a festive post race beer garden.

Hoppy Easter on April 4, 2026 at Griffith Park in Los Angeles offers 5k, 10k, 15k and half marathon on scenic shared trails where strollers are welcome. Enjoy aid stations, free photos and a custom finisher medal to celebrate your run.

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.

Run scenic trails at the Nature Made Great Race in Agoura Hills with distances from 1 mile to a half marathon and combo events. Enjoy a big post race party with food, music and shopping or join virtually.

Run with the Burros in Inyokern CA mixes classic pack burro racing with trail running across desert terrain, raising funds for local animal charities. Choose from marathon to 5 mile distances and race solo or paired with a burro.

Run around Angel Island for stunning views of the Golden Gate, Alcatraz and San Francisco in a scenic but hilly 10K or half marathon loop. Limited to 400 runners, ferry transport and a finisher shirt are included for participants.

Run scenic trails at Lake Sonoma near Healdsburg with 100K, 50K or the Trail Sisters women only half marathon that finishes at the Visitor Center. Expect big climbs, lake overlooks, strong aid support and a celebratory finish.

Two days of scenic trail runs and gravel rides at Bedrock Valley Trail Runs, April 11 and 12, 2026 at Diamond Valley Lake Marina in Hemet, CA. Family friendly with kids and stroller runs, medals and finisher shirts, bring your own hydration..

The Oriflamme 50K near Julian, CA offers sunrise views over Anza Borrego as the route drops from the Pacific Crest to Blair Valley. Limited to 150 runners, this out and back features varied trail footing, full aid, and a 9 hour cutoff.

Run around Lake Chabot's scenic reservoir and rolling hills on April 11, 2026, with distances from a kids dash to a 50K ultra. Pre registered runners get shirts, all finishers earn medals, and well stocked aid stations keep you moving.

Join the Wild Flowers 10K in Auburn, CA on April 11, 2026 for a scenic trail loop featuring rolling terrain, single track and stunning viewpoints. Expect stocked aid stations, lively course support and chances at big prizes and travel award..

Challenge scenic, technical trails above Calistoga with 50K, 35K, half marathon and 10K options, several UTMB index races. Big climbs, remote single track and a custom finisher medal and race shirt for every finisher.

Run the scenic Ruth McKenzie Table Mountain Preserve with half marathon, 10k, 5k and kids races, all finishers get medals. Expect rolling hills, a summit climb and post race refreshments including beer for 21 and over.