Desert Runner Trail Series - Fall Pass

The Desert Runner Trail Series - Fall Pass is a trail and ultra running series held in Maricopa County regional parks in Arizona, presented by Aravaipa Running and Maricopa County Regional Parks. The series runs from October through April. Runners can enter individual races or purchase a series pass; the Fall Series pass offers a discount compared to registering for each race separately. It is structured around races in desert parks, not a single fixed course, with distances from short trail runs to 50K and 50-mile ultras. The series takes place in locations including Cave Creek Regional Park, Usery Mountain, McDowell Mountain, San Tan Mountain, White Tank Mountain, Lake Pleasant, the Maricopa Trail, and Tonto National Forest. Most race days feature multiple distances, allowing 5K runners, half-marathon-style distances, 50K participants, and longer ultra runners to compete at the same event. Archived results and final standings from past seasons establish a series identity beyond individual races, with sponsors such as Neversecond and Athletico Physical Therapy.