Trail Running calendar near Windsor 2026-2027

Tails & Trails is a charitable run and walk supporting Dogwood Animal Rescue. Choose from a 5K, Dogwood Dash, or a virtual option on May 3, 2026. Registration opens in March.

A trail run on Pacific Union College trails in Angwin, CA on May 3, 2026 offering a 1 Mile Kids Run for ages 7 to 12, plus 10K and 26K distances. The event is cupless and proceeds benefit PUC Athletics.

The Muir Woods Marathon takes place on May 9, 2026, offering a scenic trail run near Stinson Beach. Participants can choose from a marathon, half marathon, or 7-mile distance, navigating the beautiful coastal and forested terrain.

An annual 5K trail run in Point Arena along the Point Arena Stornetta Unit of the California Coastal National Monument. Proceeds support ACORN Partners in Education and its Students Protecting the Coast youth stewardship program.

Trail race on May 9, 2026 at Lake Anza in Tilden Regional Park offering distances from 10K to 50K plus a free kids 50 yd dash. Courses are marked, aid stations occur every 3 to 4 miles, and the event uses a cupless aid protocol.

This inaugural half marathon offers a scenic tour of Napa Valley, running on closed vineyard roads from Quintessa Winery to Yountville. The race includes shuttle transport, a custom medal, and concludes with a Wine Village celebration featu..

Trail runs at Skyline Wilderness Park in Napa with 50K, 30K, 21K and 10K options. Routes include steep Rim Rock climbs, summit views, cupless aid stations, and on-course water-only sections for longer distances.

The inaugural Rim Rock 50 Mile Trail Challenge traverses the rugged trails of Napa's Skyline Wilderness Park. Solo runners and relay teams tackle a two-loop course through oak woodlands and exposed ridgelines. The event emphasizes environme..

Experience the Wildcat trail race in Wildcat Canyon Regional Park, with 360-degree views of the Bay Area. Choose from a Half Marathon, 10K, or 5K on challenging, scenic trails. All finishers receive a custom medal and shirt, and walkers are..

Trail runs at China Camp State Park on May 23, 2026 feature 5K, 10K and half marathon courses on single track and fire roads with prominent climbs, marked aid stations, a cupless policy, and limited field size.

Run the original Brazen Racing event at historic Point Pinole. Choose from a half marathon, 10K, or 5K trail race. Runners and walkers are both welcome to participate.

A trail event at Joaquin Miller Park on May 30, 2026 offering 8K to 50K distances plus a free kids 50yd dash. Routes run through redwood forest on marked single track with aid stations every 3 to 6 miles.

This community event features a 5K and 10K run/walk through Coyote Point Park, followed by a free Wellness Fair. Registration includes a T-shirt, and participants are welcome with strollers and dogs. The day focuses on health and mental wel..

These trail runs explore the beautiful Sonoma Coast State Park. The courses traverse a scenic ridgeline with ocean views and summit Red Hill. The event will return in 2027 with a planned new location in Monte Rio.

The Dirt Circus - San Francisco will take place in San Francisco on Saturday 6 June 2026. You can run between 3 and 5 miles.

A trail event in Castro Valley on June 7, 2026 offering a chip timed half marathon and 5K with on-course water, first aid support, guaranteed t-shirts for early registrants, and age division awards.

The Bay Area 100 is a point-to-point 100-mile ultramarathon journey through the East Bay hills, starting at UC Berkeley. With 18,000ft of climbing and a 33-hour limit, it traverses diverse terrain from redwood forests to exposed ridges. It..

The Pena Passage offers trail races through the scenic Lagoon Valley Park. Choose from a challenging 30K with technical trails or shorter 5K and 10K routes. The event includes aid stations and a partnership supporting mental health awarenes..

Live and virtual 5K, 10K and half marathon at Lake Chabot Regional Park in Castro Valley, June 26 to 29, 2026. Courses mix paved and trail sections with aid stations; live participants receive a shirt, handcrafted woodallion and beer sample..

The 14th Bay 2 Bankers offers a unique team adventure through San Francisco. Navigate a 5K or 10K course from Ghirardelli Square using a custom map. Teams of up to five can enjoy post-run refreshments.