Mt Umunhum Ultras

The Mt Umunhum Ultras is a challenging trail running event held in San Jose, California, featuring multiple race distances including 50K, Trail Marathon, 30K, Half Marathon, 9 Mile, 10K, and 5K. The course traverses the scenic Santa Clara Valley, Sierra Azul Open Space Preserve, and Santa Cruz Mountains, offering over 15,000 feet of elevation gain through oak forests, meadows, and steep climbs. The event emphasizes a rugged, adventurous atmosphere suitable for experienced trail runners.

Courses are well-marked with aid stations and all finishers receive commemorative medals. The 52-mile race is not offered in 2025 but may return in 2026. Registration and bib pick-up occur on race day. Visit the organization's website for the most recent information.