Outdoor X 12 Hour Endurance Run

The Outdoor X12 Endurance Run & Ruck challenges participants to a 12-hour endurance event in Dayton, Ohio's Montgomery County.

Competitors tackle a loop course made up of a bike path, open lawn, and trail, aiming to rack up as much distance as possible within the time limit. The format rewards steady pacing and mental toughness over the full twelve hours, drawing a mix of ultrarunners, walkers, and rucking enthusiasts to the same looped course. Everyone who completes the course within the time limit earns a finisher medal, and the event welcomes both seasoned endurance athletes and first-timers alike.