Trail Running calendar near Glen Ellen 2026-2027

A community running event in Los Altos Hills featuring hilly 5K and 10K courses plus a 1 Mile Fun Run, with the route starting at Westwind Community Barn and passing through Byrne Preserve and local pathways.

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..

Wild Rose Half Marathon & 5K The Wild Rose Half Marathon & 5K takes place in Roseville, California. The event starts and finishes at the Moksa Barrel House on Foothills Boulevard. The event offers three distances: Half Marathon: Th..

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.

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, the Skyline Endurance Run is a scenic August loop starting at Lake Chabot Marina. Known for strong community support and aid stations, it finishes with a plant-based BBQ. The event also features a half mar..

Bear Creek 2026 offers a hilly half marathon, 10K, and 5K on August 8 in Lafayette, CA. The scenic trail course features beautiful views and a rewarding downhill finish. All finishers get a custom medal and shirt, and walkers are welcome.