Trail Running calendar near Los Gatos 2026-2027

Trail races on August 1, 2026 in the Marin Headlands near Sausalito offer 8K, half, 30K and 50K courses with coastal single track, ocean and Golden Gate views. The event is chip timed and runs as a cupless race.

A classic trail event in Castro Valley offering 50K and 21K loop courses through East Bay Regional Parks, with on-course aid stations, volunteer support, race swag, and age-group awards.

Test your endurance at Skyline Wilderness Park in this time based trail run where you complete as many laps as possible in three, six, or twelve hours. Enjoy rolling hills and scenic singletrack in the heart of Napa.

A trail running event through redwood forests near Gilroy with 5K, 10K, and half marathon options featuring large elevation gains and scholarship fundraising for youth trail running camps.

Bear Creek 2026 in Lafayette California offers a half marathon, 10K, 5K and a remote runner option on August 8, 2026. The trail course includes hills, scenic views and a final mile of downhill shaded single track.

An annual single-loop 50K ultramarathon in Muir Beach, California, traversing famous Marin trails with about 6,500 feet of elevation gain and ocean and Bay Area views.

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.

Trail races on hilly mixed dirt and single track at Almaden Quicksilver Park with distances from 5K to 50K, aid stations, drop bag service for longer races, and mandatory course markings and cutoffs.

The Lands End 5K will take place in Lincoln Park-Lobos on Sunday 16 August 2026. You can run 5 kilometers.

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.

The Double Dipsea is a longstanding annual 13.7 mile trail race from Stinson Beach to Mill Valley and back, run on mostly single track with many stairs and handicapped starts that create frequent passing among runners.

A 4.15 miles, two loop cross country race on the fire roads of the upper UC Santa Cruz campus on August 23, 2026. The event is part of the Pacific Association USATF Grand Prix series and has limited nearby parking.

Trail races at Huddart Park, King's Mountain and Bear Gulch offer measured distances from a 50 yard kids dash to a 50K, with fees listed per distance and registration opening November 11, 2025.

Island loop races at Angel Island State Park with sweeping bay views; a 10K single loop and a Half Marathon that does two loops, limited to 400 participants and requiring ferry transport.

A steep 4.75 mile up and down run, hike, or walk on San Anselmo's Bald Hill that finishes downtown with live music and a t shirt. The third annual event benefits local nonprofits and includes town endorsement.

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..

Multi-distance trail event at Mount Diablo offering races from 4 miles to a 50K plus a free kids dash. Mountainous routes have significant elevation gain, marked courses, staffed aid stations, and a cupless hydration policy.

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.

A multi-distance trail event in Tilden Regional Park on September 12, 2026 featuring 50K, 35K, half marathon, and 10K courses with regular aid stations, cupless policies, event shirts, and a range of finishers awards.