Trail Running calendar near Watsonville 2026-2027

A winter trail event at Almaden Quicksilver County Park offering distances from a kids run to a 50K, marked dirt-road courses, aid stations with toilets, drop-bag service for longer races, and measurable elevation gain.

Join a community run and walk along the scenic trails of the Tuolumne River Regional Parkway in Modesto. Support the Sole Support Sponsorship Program while completing a 5K course alongside friends and family.

Crystal Springs Trail Run on January 17, 2027 in Woodside California offers distances from an 8K to a 50K plus a free kids 50yd dash. Routes run through Huddart Park, King's Mountain and Bear Gulch with marked trails and regular aid station..

Run through the towering redwoods and lush ferns of Huddart Park in Woodside. This trail event offers multiple distances from a five mile race to a 50K ultramarathon plus a free dash for children.

A trail running event that crosses the Golden Gate Bridge into the Marin Headlands. Races include 15K, 25K, 50K and 50 mile options on January 23 to 24, 2027, organized by Spartan Trail.

Runs along the bay at Coyote Hills Regional Park in Fremont include a half marathon, 10K and 5K on mostly flat courses with mixed surfaces and boardwalks through marsh areas. Walkers are welcome.

Experience the coastal beauty of the Marin Headlands at the Golden Gate Trail Run. Choose from distances ranging from a 50K trail race to a fun kids dash with views of the Golden Gate Bridge and San Francisco.

Mt. Umunhum Trail Conquest (Winter) is a multi-distance trail event at Almaden Quicksilver County Park offering races from a kids run to a 50K with marked out-and-back courses, multiple aid stations, and summit sections to Bald Mountain or..

Run or walk along the San Francisco Bay starting from the San Leandro Marina. Choose from half marathon, 10K, or 5K distances with professional timing and custom finisher medals for all participants.

Montara Mountain Trail Run on February 20, 2027 in San Pedro Valley Park offers distances from a free 50 yard kids dash to a 50K, with marked trails, cupless aid stations every 6 to 7 miles, and substantial elevation gain on many courses.

Trail races in Sanborn County Park on mostly single track, technical forest trails with multiple distances, significant elevation gain, marked courses, and full aid at key points.

Experience a trail run across the forest and hills of Angel Island with views of San Francisco and the Golden Gate. Choose from multiple race distances including a youth dash and enjoy a picnic at Ayala Cove.

A point to point half marathon to the summit area of Mt. Umunhum on March 8, 2025, covering about 13.35 miles with 4,767 feet of ascent, marked mainly by pink ribbons and supported by aid stations with toilets.

A multi-distance trail event on March 22, 2025 at Calero County Park in San Jose offering runs from a kids race to a 50K, single track and dirt-road courses, multiple aid stations, and per-distance time limits.

Multiple trail distances run through Redwood Regional Park on March 20, 2027 at Chabot Space & Science Center. Routes use East Ridge, West Ridge, Stream and Bridle trails and distances were measured with a Rolatape surveyor's wheel.

A running event at Quarry Lakes Regional Recreation Area in Fremont on March 27, 2027, offering a mostly-flat course on the Western Pacific Trail with Half Marathon, 10K, 5K and a remote runner option.

A spring trail race at Pueblo Day Use Area in Santa Teresa County Park on April 5, 2025 offering 5K, 10K, 10 Mile and a half marathon across marked, hilly trails with aid stations and a four hour half marathon limit.

A multi-distance Spartan obstacle race weekend at Stanislaus County Parks on Apr 3-4, 2027, featuring Sprint, Super, Beast, Ultra and kids races across technical trails, grasslands and hills with signature obstacles and team options.

A trail running event at 1700 Castle Rock Road in Walnut Creek on April 3, 2027 offering 50K, half marathon, 10K and 5K options plus a hiker half and remote runner choice. Part of entry fees support Save Mount Diablo.

A trail event at Skyline Ridge Open Space Preserve offering distances from a 50 yard kids dash to a 50K race. Routes run largely on the Bay Area Ridge Trail with ocean and Santa Cruz Mountains views.