Trail Running calendar near Santa Cruz 2025-2026

The Pacifica Foothills Trail Run, held at San Pedro Valley Park in Pacifica, CA, offers runners scenic trail races of 10K, half marathon, and 30K distances. Nestled in the Santa Cruz Mountain range foothills, the course features a challenging 1,900-foot climb up Montara Mountain North Peak with stun..

The Coyote Hills Run is a scenic running event held at Coyote Hills Regional Park in Fremont, California, featuring a half marathon, 10K, and 5K distances. The courses offer a mix of paved trails, dirt paths, and wooden boardwalks through marshlands, with minimal elevation gain despite the park's hi..

The Fort Ord Trail Run, held at the Fort Ord National Monument near Salinas, California, offers 10K, 25K, and 50K race distances. This scenic event takes place on trails within a former U.S. Army post known for its proximity to the beach and diverse natural landscapes, including a nature reserve for..

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, trail marathon, 30K, half marathon, 7-mile, 5K, mile, and a kids run.The longer courses traverse the scenic Sierra Azu..

The Monterey Ultra is a 50-mile trail running event held at Fort Ord National Monument and Laguna Seca Recreation Area in Monterey, California. The course features a diverse mix of terrain including wide fire roads, twisting single-track trails, deep sand, and rocky, rooty climbs, offering runners s..

The Bay Breeze event in San Leandro offers a scenic and romantic running experience along the San Francisco Bay, starting and finishing at San Leandro Marina Park. Participants can choose from a half marathon, 10K, or 5K race, all featuring mostly flat, easy bayside trails that stay close to the wat..

Redtail Ridge is a trail running event held at Lake Chabot Regional Park in Castro Valley, California. The race offers multiple distances including 5K, 10K, half marathon, 30K, and 50K, catering to a wide range of runners from beginners to those seeking personal records. The course features eucalypt..

The Marin Ultra Challenge is a premier long-distance trail race held in Marin County, California, featuring 50K and 50 Mile distances. The course offers about 11,000 feet of elevation gain for the 50 Mile race, traversing scenic and challenging terrain including Rodeo Beach, Marin Headlands, Mt. Tam..

The Western Pacific Marathon event, held at Quarry Lakes Regional Recreation Area in Fremont, California, offers runners a choice of half marathon, 10K, and 5K distances. The course is mostly flat, following the historic Western Pacific Trail, which was originally used in the 1800s to transport grav..

The Golden Gate Headlands Marathon will take place in Mill Valley on Saturday 4 April 2026. You can run between 10 and 26 miles.

The Diablo Trails Challenge will take place in Walnut Creek on Saturday 4 April 2026. You can run between 5 and 50 kilometers.

The Romancing the Island Half Marathon will take place in Belvedere Tiburon on Saturday 11 April 2026. You can run between 10 and 13 miles.

The Badger Cove Half Marathon will take place in Livermore on Saturday 18 April 2026. You can run between 5 and 13 miles.

The Mt. Tam Wild Boar Half Marathon will take place in Mill Valley on Saturday 25 April 2026. You can run between 10 and 13 miles.

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 a short paved section. Runners enjoy stunning views of..

The Muir Woods Marathon, organized by Enviro Sports, is a trail running event held near Stinson Beach, California. It offers multiple race distances including a full marathon, half marathon, and a 7-mile run. The course features scenic trails through the iconic Muir Woods and surrounding natural lan..

The Trailquake will take place in Saratoga on Sunday 10 May 2026. You can run between 5 and 13 miles.

Run for Amma is an annual charity running event held at Skyline Ridge Open Space Preserve in Los Gatos, California, celebrating its 15th anniversary in 2026. The event offers three race distances: a challenging 50K with 5,266 feet of elevation gain, a 30K with 3,629 feet of elevation gain, and a 10K..

The Wildcat Half Marathon will take place in El Sobrante on Saturday 16 May 2026. You can run between 5 and 13 miles.

The Nitro Trail will take place in San Pablo on Saturday 30 May 2026. You can run between 5 and 13 miles.