Trail Running calendar near Lake Sonoma 2026-2027

Trail races at Rodeo Beach in Sausalito on February 7, 2026, offering distances from 8K through 50K plus a free kids dash. The event is sold out and features coastal and Marin Headlands views including the Golden Gate Bridge.

The Zoom Angel Island will take place in Tiburon on Sunday 1 March 2026. You can run between 5 and 15 miles.

A long-distance trail event in Sausalito featuring a 50K and 50 Mile through Marin Headlands, Muir Woods, and Mt. Tamalpais, with live timing, aid stations, cupless provisions, and cash prizes for top 50 Mile finishers.

Challenge yourself on the scenic, technical trails of China Camp State Park with 5K, 10K and Half Marathon options March 13 to 16, 2026. Live and virtual entries available with registration price rising after Dec 31, 2025.

A trail running weekend in Marinwood, California, with 28K and 50K single loops plus a point-to-point 100K, featuring routes that summit several high points and offer wide views across the San Francisco Bay Area.

A trail race at Bothe Napa Valley State Park on March 21, 2026 offering marathon, half marathon and 10K with a 300 runner limit. Courses use single track loops with one aid station and a six hour marathon cutoff.

A charity trail run on March 22, 2026, at Lake Lagunitas near Fairfax, CA. The 10 km course includes technical terrain and ~400 feet of elevation change, with proceeds beyond event costs donated to Evidence Action's Safe Water Now program.

Scenic trail races in the Marin Headlands on April 4, 2026 feature marathon, half marathon and 10K courses with single track and fire road sections plus views of the Golden Gate Bridge and Pacific Ocean. Field limited to 400 participants.

The Romancing the Island Half Marathon will take place in Tiburon on Saturday 11 April 2026. You can run between 10 and 21 kilometers.

Springtime trail races at Lake Sonoma on April 11, 2026 feature a Western States qualifying 100K, a 50K that crosses the Lake Sonoma bridge, and a women-only Trail Sisters half marathon with shuttle service.

A four-distance trail event in Calistoga that follows single track and fire road into the Mount St. Helena area. Routes include technical sections, long aid stretches, drop bag service at Highway 29, and finisher medals and shirts.

A 50K trail run along Northern California's Mendocino Coast, featuring river crossings, redwood forest sections and waterfalls. The course finishes on the Mendocino Village bluffs with views over the Pacific Ocean.

A community fundraiser at Spring Lake Regional Park on April 18, 2026 featuring a half marathon, 10K and 5K. The low-waste event donates a portion of proceeds to Trione-Annadel State Park and includes a medal, shirt and post-race snacks.

Trail race on Mt Tamalpais with a Half Marathon and 10K on coastal ridge single-track and road, limited to 300 participants, with aid stations, course markings, and participant t-shirts.

A 62 mile trail ultramarathon in the Marin Headlands near Stinson Beach, CA, featuring over 11,000 feet of climbing, marked trails and staffed aid stations with medical crews. Entry is limited to 400 runners and a four person relay is offer..

Join Tails & Trails on May 3, 2026 for a fun charitable run and walk supporting Dogwood Animal Rescue. Choose the in person 5K Dogwood Dash or a virtual any distance and help animals while you enjoy the outdoors in Windsor, CA.

A trail run through the forested Pacific Union College trails in Angwin, California on May 3, 2026, offering a 1 Mile kids run (ages 7 to 12), a 10K and a 26K. The event is cupless and proceeds benefit PUC Athletics.

Trail races from Stinson Beach into Muir Woods include a marathon, half marathon and a 7 mile course. Routes use the Dipsea Trail and Steep Ravine with ladders and stair sections, feature multiple aid stations, and are limited to 300 partic..

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.