Trail Running calendar near Fairfield 2026-2027

Experience the scenic trails of Lake Chabot Regional Park with a variety of distances including a 5k, 10k, and half marathon. Enjoy a lively atmosphere with a post-race brewfest and handcrafted finisher awards.

Celebrate the classic vibes of San Francisco with a themed navigation run starting at Ghirardelli Square. Use a custom map to find checkpoints as an individual or in a team of five.

Trail races of 10K, half marathon and 30K near Stinson Beach, CA that feature steep climbs, coastal ridge running, and technical single-track through Muir Woods and Mt Tam. Aid stations offer gels, snacks and hydration; 30K has a 6.5 hour l..

Test your limits at Point Pinole Regional Shoreline with three 6 or 12 hour endurance runs on a scenic coastal loop. Enjoy a party atmosphere with an all day picnic and options for individual or team participation.

Trail running at Calero County Park with multiple distances across single track and dirt paths, significant climbs, aid stations and free parking at the park.

Trail run in Auburn, CA on July 26, 2026 featuring two courses through single-track trails, canal sections and dirt roads in the American River Canyon. Includes race shirt, finisher medal and post-race beer for those 21 and older.

Trail races on coastal singletrack in the Marin Headlands, offering 8K, half marathon, 30K and 50K options with varied aid stations, wildlife views, and a 350-runner capacity.

A loop trail race from Lake Chabot Marina through East Bay Regional Parks to Skyline Gate, offering 50K and 21K distances with on-course aid stations, athlete guides, race swag, and age group awards.

Join the Bear Creek 2026 trail run in Lafayette for a Half Marathon, 10K, or 5K featuring scenic views and shaded single-track trails. Runners and walkers alike will enjoy this professionally timed event with custom medals and shirts.

A single-loop 50K ultramarathon through Marin Headlands trails with about 6,500 feet of elevation gain, aid stations along the route, and a concurrent Kids' One Mile Challenge on August 15, 2026.

Experience the trails of Redwood Regional Park in Oakland. Runners can choose from distances ranging from a 50 yard kids dash to a 50K ultramarathon through scenic ridge lines and redwood groves.

A trail running event at Almaden Quicksilver Park with multiple distances from 5K to 50K, mixed dirt and single track, repeated aid stations, drop bag service on longer races, and medals for all finishers.

Navigate through historic San Francisco neighborhoods and parks in this unique 5K or 10K challenge. Use a custom map to find checkpoints and solve riddles individually or in teams of up to five people.

Tackle the legendary Double Dipsea, a 13.7-mile out-and-back on the historic Dipsea Trail from Stinson Beach. This unique race features a handicapped start, putting all runners on a single-track course of constant passing. Experience the hi..

Join this unique trail run at Folsom Lake SRA where you can compete alone or with your dog. Features 10K and 5K courses with specialized awards for different dog weight classes and finisher medals for all.

Experience obstacle course racing at Mahon Ranch with 5K and 10K distances featuring signature Spartan obstacles. Join a weekend of trail running and river crossings in the scenic Northern California farmland near Sacramento.

Experience a scenic trail run around Angel Island State Park with views of the San Francisco skyline and Golden Gate Bridge. Choose between 10K and half marathon distances on this hilly island loop trail.

Explore the scenic trails of Huddart Park and Bear Gulch at this multi distance trail event. Runners can choose from distances ranging from 8K to 50K through redwood forests and lush ferns.

This trail running event in Auburn, California, offers half marathon and 10K distances. The courses traverse the steep and scenic trails of the Mammoth Bar OHV area, known for its rugged climbs and canyon views.

Experience the natural scenery of Mount Diablo State Park through a variety of trail races. Runners can select distances ranging from 4 miles to a 50K with spectacular views of the San Francisco Bay Area.