The track may feel smooth under your feet when you’re wearing spikes or trainers, but with bare feet, you truly feel the roughness of the terrain. That was a hard lesson learned over the weekend at the Ivy League Indoor Heptagonal Championships in Cambridge, Massachusetts, when Harvard junior Kieran Tuntivate lost his shoe between the 400 and 500 meter mark of the race. His shoe began slipping off after a competitor stepped on its back heel, creating an unnatural and uncomfortable motion about 300 meters into the race. Soon, Tuntivate had enough, and forced the shoe off his foot, leaving...