Trail Running calendar near Watsonville 2025-2026

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 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 both beginners and experienced ultra-runners. The event celebrates and supports the preservat..

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 Badger Cove Half Marathon, held at Del Valle Regional Park in Livermore, California, offers runners a choice of half marathon, 10K, and 5K distances. Scheduled for April 18, 2026, the event features scenic courses through the emerald hills of Lake Del Valle, with the 5K course being virtually hi..

Trailquake 2026 is a trail running event held at Sanborn Park, Saratoga, California, featuring 5K, 10K, and half marathon distances. Runners traverse scenic single-track trails through redwoods and pines, with the 10K and half marathon courses ascending to peaks that offer spectacular views. The eve..

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 Wildcat Half Marathon, held at 3800 Clark Road in El Sobrante, California, offers runners a scenic experience with spectacular 360-degree views of the Bay Area. The event features multiple race distances including a half marathon, 10K, and 5K, catering to a variety of runners. Participants can e..

Nitro Trail 2026 is a trail running event held at Point Pinole Regional Shoreline Park in San Pablo, California. The race offers three distances: a half marathon, 10K, and 5K, catering to a range of runners. The location, once home to TNT factories, now provides an exciting trail running experience..

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, smooth trails, and sparse c..