Trail Running calendar near Morgan Hill 2025-2026

The Hark the Herald Half Marathon & 10K is an annual running event held at Angel Island State Park near Belvedere Tiburon, California. Celebrating its 37th year in 2025, the race features a scenic, hilly loop trail around Angel Island with stunning views of the Golden Gate Bridge, San Francisco, Alc..

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 provides a scenic course through the trails of Lake Chabot, welcoming participants of all levels..

Brazen New Year's Day 2026 is a scenic running event held at Lake Chabot in Castro Valley, California. Participants can choose from a half marathon, 10K, or 5K race, all set on invigorating trails that welcome the first sunrise of the year. The event offers a festive atmosphere, encouraging runners..

The Hacienda Hills Trail Run - Winter takes place at Almaden Quicksilver County Park near San Jose, California. This scenic Northern California trail running event offers nine race distances ranging from a Kids Run and 1 Mile to challenging 50K and Marathon options, all featuring increasing elevatio..

The Coyote Hills Run is a scenic running event held at Coyote Hills Regional Park, located at 9400 Quarry Road, Fremont, California, along the eastern shoreline of San Francisco Bay. The event offers multiple race distances including a 5K, 10K, and a half marathon, welcoming runners and hikers alike..

The Mt. Umunhum Trail Conquest - Winter is a trail running event held at Almaden Quicksilver County Park in San Jose, California. The race offers multiple distances including a 50K, marathon, 30K, half marathon, 7-mile, 5K, mile, and a kids run.The longer courses traverse the scenic Sierra Azul Open..

Bay Breeze in San Leandro, California, is a scenic running event featuring a half marathon, 10K, and 5K distances. The race starts and finishes at San Leandro Marina Park, offering participants romantic vistas of San Francisco and the Bay. The course is mostly flat and follows an easy bayside trail..

The Golden Gate Headlands Marathon, Half Marathon, and 10K is an annual trail running event held in the scenic Marin Headlands near Mill Valley, California. Participants start and finish at the Historic Gunnery Range in Rodeo Valley, running through a course that combines single-track hiking trails..

The Diablo Trails Challenge is a trail running event held at 1700 Castle Rock Road, Walnut Creek, California. It offers multiple race distances including a 50K ultra, half marathon, 10K, and 5K, catering to runners of all experience levels from beginners to seasoned ultra-runners. The event supports..

The Romancing the Island Half Marathon & 10K is an annual running event held at Angel Island State Park near Belvedere Tiburon, California. Participants enjoy a scenic, hilly loop trail that circumnavigates Angel Island, offering stunning panoramic views of the Golden Gate Bridge, San Francisco, Alc..

The Mt. Tam Wild Boar Half Marathon & 10K is an annual trail running event held at Mt. Tamalpais State Park in Mill Valley, California.Celebrating its 38th year, the race features a scenic coastal ridge course combining paved roads and single-track dirt trails with stunning views of the Pacific Ocea..

The Miwok 100K is a renowned trail ultramarathon held near Stinson Beach, California, just under an hour from San Francisco. The challenging 100-kilometer course features 11,800 feet of elevation gain across single-track trails, dirt roads, and about a mile of paved road. Runners enjoy stunning view..

The Muir Woods Marathon, Half Marathon, and 7 Mile race take place annually at Stinson Beach, California, offering a challenging trail running experience through the scenic Muir Woods. Participants start at sea level before ascending into dense redwood and oak forests along the historic Dipsea Trail..

Run for Amma is an annual charity running event held at Skyline Ridge Open Space Preserve in Los Gatos, California, supporting UCSF cancer research. Celebrating its 15th anniversary, the event offers three race distances: a challenging 50K with 5,266 feet of elevation gain, a 30K with 3,629 feet of..

The Toro Park Trail Run, held in Salinas, California, offers runners a scenic experience through the iconic Bay Area landscape. Participants can choose from three distances: a 10K, a half marathon (21K), and a full trail marathon. The course features rolling golden hills, sparse coast live oak trees..