Old Pueblo Endurance Runs

The Old Pueblo Endurance Runs is a historic ultramarathon held in Sonoita, Arizona, on the scenic trails of the Santa Rita Mountains. Established in 1985, it is one of Arizona’s oldest trail ultramarathons, offering 50-mile and 25-mile race options. The event takes runners through rugged terrain starting at Kentucky Camp, near Mt.

Wrightson, and features challenging courses along the Arizona Trail, honoring the region’s Native American, pioneer, and mining history. Participants have the chance to qualify for prestigious races like the Angeles Crest 100 and earn special prizes for completing the Southern Arizona Triple 50 series. The race celebrates trail running’s rich heritage and natural beauty. Visit the organization's website for the most recent information.