Trail Running calendar near Tracy 2026-2027

Trail races on Mt. Tam near Stinson Beach offering 10K, half marathon, and 30K courses with steep climbs, technical single-track, cupless aid stations, chip timing, and a 300-runner capacity.

Trail races at Rodeo Beach in the Marin Headlands offering 8K, half marathon, 30K and 50K on coastal singletrack and fire roads; chip timed, cupless, capacity 350.

One of America's oldest 50k races loops through East Bay parks. It's known for strong community support and a post-race plant-based BBQ. The event happens every August at Lake Chabot Marina.

Trail races at Sprig Lake Day Use Area in Gilroy on August 8, 2026 feature 5K, 10K and half marathon routes with significant elevation gain; proceeds fund local scholarships to a national trail running camp.

A single loop 50K ultramarathon in Muir Beach, California on Saturday, August 15, 2026. The course uses notable Marin trails, includes about 6500 feet of elevation gain, and features coastal and Bay Area views.

Trail races of 30K, half marathon, and 10K run through Henry Cowell Redwoods State Park with redwood forest, river crossings, ocean breezes, and aid stations every 5 to 6 miles.

An orienteering style 5K and 10K in San Francisco where solo runners or teams of up to five use a custom map to visit up to 30 checkpoints, answer simple multiple choice questions, and enjoy refreshments at the finish.

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..

Trail run in Huddart Park near Woodside, California on August 30, 2026 offering distances from 8K to 50K plus a free kids 50 yard dash. Courses run on single track and dirt roads with aid stations every 5 to 9 miles.

Diablo Trail Run on September 6, 2026 in Clayton CA offers distances from a 4 mile Mitchell Canyon course to a 50K, plus a free kids 50 yard dash for age six and younger. Courses use dirt roads and single track with aid stations every 3 to..

Trail races on September 12, 2026 in Tilden Regional Park and Wildcat Canyon offering 50K, 35K, half marathon and 10K courses with marked trails, aid stations every five to seven miles, and a cupless format requiring reusable cups or bottle..

Explore scenic trails along Folsom Lake at the Gold Rush Growler Trail Runs. Choose between a 10-mile or 5K course starting at Granite Beach. Finish with a custom beer glass, a local IPA, and a hearty post-race meal.

Rocky Ridge is a trail race in the Las Trampas Wilderness on September 19, 2026. Choose from half marathon, 10K, or 5K distances on hilly courses with scenic views. It is part of the Brazen Ultra Half Series.

A multi distance trail event at Lake Chabot Regional Park in Castro Valley featuring a 100k, a 50 mile, and a marathon. All races are UTMB Index events and the 50 mile is part of the Pacific USATF Grand Prix.

Explore the shaded redwood groves and challenging, flowy singletrack of Sanborn County Park. This trail event on September 27, 2026, offers 10k, half marathon, and 50k distances through the Santa Cruz Mountains.

Scenic coastal races at Wilder Ranch State Park on October 4, 2026. Options include a Half Marathon, a 12K, and a 4K run and walk along mostly flat packed dirt trails.

Run the 39th Ruth Anderson Memorial Endurance Run on October 10, 2026 in San Francisco. Choose 100 km, 50 miles, or 50 km on a scenic paved loop around Lake Merced with chip timing and certified 50K and 50 mile courses.

Granite Head Trails and Ales offers two scenic fall trail runs at Granite Beach, California. Runners will encounter dirt trails, granite boulders, and a sandy beach along Folsom Lake. All finishers receive a tech shirt, medal, and post-race..

Trail races from a kids run to a half marathon take place inside Marshall Gold Discovery State Historic Park in Coloma, CA. Courses mix singletrack and paved trails with technical climbs, scenic views, aid stations, and finishers' medals.

A trail running event on Mount Diablo in Walnut Creek. Runners can choose from a 30K, half marathon, 10K, or 5K distance on scenic trails. Walkers are welcome, and conditions may include mud and creek crossings.