Trail Running calendar near Livermore 2026-2027

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 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.

Experience a trail run through redwood trees and mountain peaks at the Mt. Madonna Challenge. Choose between steep 5K, 10K, and Half Marathon courses while supporting local youth running scholarships.

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.

Trail races of 10K, half marathon and 30K through Henry Cowell Redwoods State Park with single track, sand ridge and river crossings. Aid stations are spaced every five to six miles and the event is cupless.

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..

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.

Explore the gentle trails of Pinto Lake County Park at the Apple City 5k. This inaugural event celebrates the agricultural roots of Watsonville's Pajaro Valley. The race supports local students, with half of its proceeds going to the Pajaro..

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.

Experience the trails of China Camp State Park with a selection of distances including a 5K 10K and Half Marathon. Participants enjoy a post race festival with beer steins custom medals and local snacks.

Trail races at Tilden Regional Park in Berkeley on September 12, 2026, offering 50K, 35K, half marathon and 10K with stocked aid stations and a cupless policy. Capacity is limited to 350 runners and the 50K has a time limit.

Trail races at Stevens Creek Reservoir include a Half Marathon, an 11K and a 2.5 mile charity Lollipop Loop with shaded single track, ridge views, aid stations and a capped field for longer distances.

A trail running event at Calero County Park offering distances from a kids run to a 50K across single-track and dirt roads, with named aid stations, drop bag support, bib color assignments, and time limits for longer races.