Trail Running Calendar California 2026-2027

Trail races in Huddart County Park and Purisima Creek Redwoods on April 18, 2026 offering 10K, half, 35K and 50K across technical single-track and fire roads, with chip timing, cupless aid stations, and significant elevation gain.

Experience a scenic 14.5 mile trail run along the Bullards Bar Reservoir in Camptonville. This fundraiser for the Wildland Firefighter Foundation features single track trails and support from the local fire community.

Experience the majestic Solomon Hills during this trail event featuring a scenic five mile loop with 900 feet of elevation. Choose between 5, 10, or 15 mile distances starting from the historic Newlove Picnic Grounds in Orcutt.

Trail running in Sierra Azul Open Space Preserve near Mt. Umunhum, offering routed out-and-back courses from 5K to 50K with marked trails, aid stations, toilets and drop bag service for longer distances.

A community trail event in Mariposa on April 19, 2026, with 5K and 12K courses starting at the historic courthouse. Aid stations and Search and Rescue support are provided, and children under 18 may participate for free.

A 5k run and walk through the scenic grounds of CASS Winery in Paso Robles. Registration includes a wine glass, a wine stopper medal, and a post race pour. The event supports the Family Care Network charity.

Join the community at Feeney Park for the Mr Frogs Wild Run in Murphys California. Choose between a children's fun run plus five or ten kilometer courses featuring scenic neighborhood loops and a festive medal ceremony.

The Presidio Community YMCA hosts the 14th annual Presidio Trail Run on April 19, 2026, with 10K, 5K and 1.5 mile courses through the Presidio. Entry fees support YMCA community programs and a signed waiver is required.

A multi distance trail event in Auburn California from 23 to 26 April 2026 following sections of the Western States Trail. Distances include 161 km, 100 km, 50 km and 25 km and the 100 km awards Western States Golden Tickets.

Run along the scenic coastal ridge of Mt Tamalpais State Park in this 38th annual event. Choose between a half marathon or 10K featuring single track trails and views of the Pacific Ocean.

A looped trail event at Lake Perris on April 25, 2026, offering 10K, 50K and 100K distances with lap-based aid, cut-off times, permitted pacers for the 100K, and included group tent camping and event amenities.

Trail races at Victory Trailhead in Woodland Hills offer distances from 6K to a newly added 100K over rugged trails and climbs. The event is fully supported but cupless and includes drop bag options, pacer rules, parking, and post race prov..

Join the SJVDHA for their annual Pacing for Prevention 5K, supporting oral cancer research. Walk or run a paved, scenic trail that welcomes strollers and dogs. Connect with health professionals and participate in wellness activities.

Test your speed and navigation skills in this unsanctioned 4+ mile race through Chino Hills. Navigate four checkpoints across gravel and trail terrain to compete for cash prizes in a format where you choose your own route.

Trail races inside Marshall Gold Discovery State Historic Park range from a Kids Run to a half marathon on varied singletrack and paved sections, with marked courses, aid stations, and notable elevation gains.

Experience a rugged trail race through the Sierra Nevada foothills featuring technical single tracks and fire roads. Choose between three distances and take on the steep ascent of El Guapo before celebrating at the finish line fiesta.

A 13.5-mile trail race on fire roads and single track in Limestone Canyon with 2,719 feet of elevation gain, two aid stations, cupless policy, and limited packet pickup options.

Mud Factor Fresno is a 5k mud run at Hobb's Grove in Sanger, CA on April 26, 2026. The all ages event runs Adult and KIDZ family waves; participants must bring a signed waiver and adults must show a photo ID.

Celebrate the 14th anniversary of Aut2Run at CSU Channel Islands with distances from a 1 Mile Run to a 15K Hero Run. Support the local autism community through this inclusive event featuring both trail and road courses.

Support youth programs while running or walking through beautiful Griffith Park. This community trail event features a 5K course for all ages and offers medals and t-shirts to the first 500 participants.