Kayla Montgomery is one of the best distant runners in the US. However, she battle with multiple sclerosis which doesn’t make running easy. Because of her MS, when she runs or sprints, she sometimes can’t feel her legs. Watch her incredible display of perseverance and determination as she pushes on the track to come out a winner, even if it means collapsing into her coach’s arms at the finish line. Kayla’s will is nothing short of amazing.