Trail Running Calendar California 2026-2027

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.

About the event The Canyons Endurance Runs by UTMB is an event in the historic gold-rush town of Auburn, California. It takes place in the northern California foothills of the Sierra Nevada range. The event is described as taking you back t..

The Mt. Tam Wild Boar Half Marathon & 10K is a scenic trail run on Mt. Tamalpais with ocean views. Taking place on April 25, 2026, it features half marathon and 10K distances. Participants receive T-shirts, and half marathon finishers get m..

A looped trail event at Lake Perris offering 10k, 50k and 100k with significant elevation gain, aid stations, group camping, and double-challenge buckles.

Trail races at Victory Trailhead offer distances from 6K to a new 100K on rugged trails with full aid, a cupless policy, course markings, drop bag service for longer races, and post race food and medals.

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.

Tackle the Shadow Strike Unsanctioned Run in Chino Hills, a 4+ mile all terrain challenge across trails, gravel and open streets. No clocks, just navigation to checkpoints and cash prizes for top finishers and random participants.

Trail races held inside Marshall Gold Discovery State Historic Park near Coloma offer distances from a kids run to a half marathon. Courses mix singletrack, switchbacks and paved sections, with marked routes, aid stations and on-course mars..

Trail running in the Sierra Nevada foothills on April 25, 2026, with 10K, 15K and 30K options over rocky single track and fire roads. The finish area includes food, drinks and race swag.

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.

Aut2Run for Autism returns for its 14th year in Camarillo, featuring six race options including a unique 15K Hero Run and a 10K trail event. All proceeds support the Autism Society Ventura County. The event offers in-person and virtual part..

This 5K run and walk supports the Northeast Division Youth Programs. The event takes place at Griffith Park in Los Angeles, with awards for top finishers and custom medals for the first 500 participants.

A multi distance trail running event May 1 to 3, 2026 in Los Padres National Forest near Ojai, CA. Races range from 10K to 100 miles with large elevation gain, limited to 150 entries and subject to strict qualifying and refund rules.

A 100 mile mountain loop near Lake Cuyamaca, CA on May 1 and 2, 2026. Mostly single track trails with about 15,400 feet of climb and a 32 hour limit. Crewed and Solo divisions are offered.

A self-supported marathon in San Diego with an unmarked, clockwise course starting and finishing at Canyonside Park Driveway. No race services or official timing are provided; a GPX/course file is available and Torrey Pine North has water a..

The Miwok 100K is a classic 62-mile trail ultramarathon in the Marin Headlands, featuring over 11,000 feet of climbing. This iconic race, which starts in Stinson Beach, is a qualifier for major events like Western States.

Trail running event in Lone Pine, CA offering 50 mile, 50K, marathon and ten mile races through the Alabama Hills and Mt Whitney foothills. The race includes ten aid stations and long standing community support.

Trails n Vines Wine Run takes runners through the scenic vineyards of Orfila Winery in Escondido. Choose from 3, 6, or 9-mile trail distances and enjoy wine tastings after the race. Participation is limited to 400 runners.

A lakeside trail race at Browns Ravine Marina on May 2, 2026, offering 10K, half marathon, 35K and 50K distances along the southern shore of Folsom Lake with stocked aid stations and limited field capacity.