Colossal Vail 50/50
Vail, United States • 5 Dec 2026
Colossal Vail 50/50
The Colossal Vail 50/50 is an ultra running event presented by Fleet Feet Tucson and scheduled for Saturday, December 5, 2026. It takes place on portions of the Arizona Trail near the community of Vail, about 24 miles southeast of Tucson, with both start and finish at Colossal Cave Mountain Park.
Distances offered include:
- 50 Mile
- 55K
- Half-Marathon
Courses use sections of the Arizona National Scenic Trail between Saguaro National Park and the foothills of the Santa Rita Mountains. The route was developed by members of the Tucson Trail Runners as a relatively fast trail ultra on rolling terrain. The organizer describes the trail as well built with gentle terrain and wide-open vistas.
Event services include well-stocked aid stations, comprehensive emergency communications, finish line food, and event merchandise. The race operates as a cupless event; reusable cups are available for purchase through race registration channels or at packet pickup, and participants may bring their own cups. The Colossal Vail 50 Mile is also the first event of three in the Southern Arizona Triple 50 series. The event was first held in 2014. Visit the organization's website for the most recent information.