Trail Running calendar near Hayward 2025-2026

The Golden Gate Trail Classic will take place in San Francisco from Saturday 22 November 2025 to Sunday 23 November 2025. You can run between 15 and 50 miles.

The Zoom Turkey Trot is a Thanksgiving Day running event held at Hellyer County Park in San Jose, California. It offers multiple race distances including 5K, 10K, and a USATF-certified half marathon, with additional age-specific categories and a free 50-yard dash for kids six and under. The courses..

Quad Dipsea is an endurance running event in its 42nd edition, based at Old Mill Park and scheduled for November 29, 2025. The race is noted for a course record of 3:41:01 set in 2015. The event webpage includes sections for the course, directions, crewing, lodging, sponsors, and results, indicating..

Quarry Turkey 2025 takes place at Quarry Lakes Regional Recreation Area in Fremont, California, on the Saturday after Thanksgiving. The event offers a fast, mostly-flat course on Quarry Lakes trails with options for a half marathon, 10K, or 5K, plus a free Little Turkeys Run for children (about 100..

The Krampus Cross Country is a festive running event held in San Francisco, California, featuring live and virtual options. Participants can choose from three distances: a 5K, 10K, or the challenging Naughty Nine Miler. The live races start at the Ecology Trail Head at the end of Barnard Avenue, wit..

Peacock Gap Trail Run, held at China Camp State Park in San Rafael, CA, offers 10K, half marathon, and 30K trail options. Runners traverse twisting single-track, forested sections, and open bayside trails with views of Mt. Tam, San Pablo Bay, and San Francisco Bay, including a notable climb about 1...

The Calero Trail Run - Winter will take place in San Jose on Saturday 6 December 2025. You can run between 5 and 50 kilometers.

ZombieRunner Quarry Lakes is held at Quarry Lakes Regional Recreation Area (Ensenada Pavilion) in Fremont, CA. The event offers 5K, 10K, Half Marathon, 30K, Marathon, plus youth options (5K and 10K for younger runners and a Kid’s Run). The course starts in the Quarry Lakes area and runs along Alamed..

Hunter S. Thompson Fear & Loathing is an urban ultramarathon held in San Francisco, California, offering 50K and 50-mile distances. The courses are predominantly city streets (about 99% for the 50K), with up to some parallel trail options on the longer race.Elevation totals include roughly 3,600 fee..

Summit Rock offers 5K, 10K and half marathon routes through Sanborn County Park in the Santa Cruz Mountains near Saratoga, California. Runners travel along miles of single-track trails under a redwood canopy, with the half-marathon and 10K routes climbing to peak viewpoints. The course emphasizes tr..

2025 Hark the Herald Half Marathon & 10K, the 37th annual edition, takes place at Angel Island State Park, Belvedere Tiburon, California. The Half Marathon is two loops on a hilly trail; the 10K is a single loop. The event is limited to 400 participants, creating an intimate atmosphere with panorami..

Woodside Ramble, staged in Huddart and Wunderlich County Parks on the San Francisco Peninsula, offers 10K, Half (13.2 miles), 35K, and 50K trail options. The course runs through forested slopes, cool canyons, and streams beneath towering redwoods, climbing into mixed evergreen forests and ridgelines..

The Brazen New Year's Eve event, held at Lake Chabot in Castro Valley, California, offers runners and walkers the opportunity to participate in a half marathon, 10K, and 5K trail races. This festive race encourages participants to close out the year with a scenic run on beautiful trails, welcoming a..

Brazen New Year's Day is an annual running event held at Lake Chabot in Castro Valley, California. It offers a scenic and challenging course with three distance options: a half marathon, 10K, and 5K. The race takes place on January 1st, providing a festive and invigorating way to start the new year...

The Hacienda Hills Trail Run - Winter will take place in Downtown San Jose on Saturday 3 January 2026. You can run between 5 and 50 kilometers.

Crystal Springs Trail Run is a multi-distance trail race in Woodside, California, weaving through Huddart Park, King’s Mountain, and Bear Gulch. The event offers 8K, Half Marathon, 35K, Marathon, 50K, and a free Kids’ Run. Runners traverse towering redwoods, lush ferns, and varied terrain, with cour..

Pacifica Foothills Trail Run takes place at San Pedro Valley Park, Pacifica, CA. Runners choose among 10K, half marathon, and 30K, all on dirt trails atop Mt. Montara and surrounding foothills.The course is mostly technical single-track with significant elevation gain (approximately 1,200 ft for the..

Coyote Hills Regional Park in Fremont, California hosts Brazen Racing's Coyote Hills event, offering Half Marathon, 10K, and 5K distances. Runners traverse a varied course that includes dirt trails, paved paths, and wooden boardwalks through marshy bay landscapes, with scenic views along the bay. De..

Fort Ord Trail Run is a three-distance trail event held at Fort Ord National Monument in Monterey, California. Runners tackle 10K (6.4 miles), 25K (16.3 miles), or 50K (31 miles) on mostly non-technical dirt trails and fire roads, with eroded sections and dunes-like hills—most climbing toward the en..

Monterey Ultra is a 50-mile trail ultramarathon held at Fort Ord National Monument near Monterey, California, designed by local runners to showcase Fort Ord’s trails and coastal views. The course comprises a 35-mile loop and a 15-mile loop, traversing a mix of wide fire roads, smooth single-track, d..