Trail Running calendar near Santa Cruz 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.

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 stages a half marathon, 10K and 5K on the redwood and pine trails of Sanborn Regional Park in Saratoga, California. Finishers receive custom medals and shirts and volunteer photographers provide free race photos.

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.

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.

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.

Nitro Trail 2026 is a trail running event at Point Pinole Regional Shoreline Park in San Pablo, CA on May 30, 2026, offering a half marathon, 10K and 5K. Organized by Brazen Racing, it includes a remote runner option and volunteer-supported..

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..

The Toro Park Trail Run offers 10K, half marathon, and marathon distances on the rocky trails and dirt roads of California's Toro Park. The summer event features rolling golden hills and oak trees. It is held as part of a Spartan festival w..

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.