Overuse injuries are common in long-distance runners, especially in competitive athletes. Although stress injuries are common, iliac stress injuries are an uncommon location for injury in long-distance runners and can take 8-12 weeks of rest and modified activity to allow for adequate bone remodeling before returning to ground running. Loss of training and fitness can result in impaired performance and an inability to compete in the championship portion of a season. In this case presentation, we describe the use of an antigravity treadmill to aid in rehabilitation after a iliac stress reaction injury in a collegiate female runner.