Trail Running calendar near Woodside 2026-2027

A trail running event in San Carlos on April 18, 2026 offering 1K kids, 5K, 10K and a new 15K with substantial climbing through Big Canyon Eaton and Pulgas Ridge. Festival atmosphere at Crestview Park with timed results and awards.

Trail races through Huddart County Park and Purisima Creek Redwoods on April 18, 2026, offering 10K, half, 35K and 50K courses with chip timing and marked aid stations. The event is limited to 450 runners and is a cupless format.

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..

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..

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.

A one-day trail running fundraiser on May 9, 2026 in Palo Corona Regional Park with five course options from a 1-mile fun run to a 35k+ route that includes Mitteldorf Preserve.

Trail races on May 9, 2026 at Almaden Quicksilver County Park near San Jose, offering 50K and 100K on scenic single-track and fire roads. The 100K is a Western States qualifier and half the proceeds support local non-profits.

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..

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.

Trailquake invites participants to run, hike, or walk through the beautiful redwood and pine trails of Saratoga. With a 5K, 10K, or half marathon to choose from, all finishers receive a custom medal and shirt. This challenging trail event i..

Join the 42nd Annual Mother's Day Run & Walk on scenic trails at Pinto Lake County Park. Choose from a 1K Kids Fun Run, a 5K run/walk, or a 10K run. The event benefits Pajaro Valley Shelter Services.

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.

A charity trail event in Los Gatos supporting UCSF cancer research, offering 50K, 30K and 10K routes at Skyline Ridge Open Space Preserve on May 16, 2026.

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..

Trail trail race at Wildcat Canyon Regional Park near El Sobrante offering a half marathon, 10K and 5K with wide Bay Area views, chip timing, medals and shirts. Walkers and hikers are welcome.

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..