Old Pueblo Endurance Runs

Old Pueblo Endurance Runs is a trail ultramarathon in Sonoita, Arizona, offering 50‑mile and 25‑mile distances. The race begins at Kentucky Camp and follows the Arizona Trail into the Santa Rita Mountains, with Wrightson towering above. The 25‑mile loop runs on forest service roads and trails, while the 50‑mile course climbs from about 4,031 to 6,232 feet, averaging roughly 6% grade.

Time limits are 7 hours for the 25‑mile and 15 hours for the 50‑mile. Notable features include a cupless post‑race cookout, sponsor swag, and awards for top finishers; the event is part of the Southern Arizona Triple 50, and top 50‑mile finishers earn entry to Angeles Crest 100. Visit the organization's website for the most recent information.