Quarry Turkey Half Marathon

The 13 Mile Trail Race Top Down is a scenic trail running event held in San Jose, California, featuring a half marathon course through Almaden Quicksilver Park and Sierra Azul Open Space Preserve. Participants are transported from Almaden Quicksilver Park to the starting point at Mt. Umunhum, where..

The Pacifica Foothills Trail Run, held at San Pedro Valley County Park in Pacifica, California, offers trail running distances of 10K, Half Marathon, and 30K. Set within 1,150 acres of coastal mountain terrain in the Santa Cruz Mountains' northern spur, the courses feature moderately technical dirt..

Trailquake is a trail running event held in Sanborn Regional Park, Saratoga, California, featuring a half marathon, 10K, and 5K distances. Participants run through scenic trails lined with redwoods and pines, including the challenging San Andreas Trail. The half marathon and 10K courses include asce..

Run for Amma is an annual trail running event held at Skyline Ridge Open Space Preserve near Los Gatos, California. The race offers three distance options: 10K, 30K, and 50K, featuring challenging elevation gains of approximately 980, 3,629, and 5,266 feet respectively. The course showcases scenic t..

The Calero Trail Run - Spring is a trail running event held at Calero County Park in San Jose, California, featuring multiple race distances including a Kids Run, 5K, 10K, 15K, half marathon, 25K, marathon, and 50K. The course offers challenging single tracks, hills, dirt paths, and scenic vistas, m..

The 2025 Lake Chabot Trail Challenge features a Half Marathon and a 5K run, taking place in Castro Valley, California. This annual event, now in its 41st year, is popular among trail runners and offers scenic views of Lake Chabot, Mt. Diablo, and the San Francisco Bay.The Half Marathon course is a h..