From a distance, the McCarren Park track may look harmless, but during the morning hours of 7 to 11, the track transforms into an obstacle course of an unusual sort. In the center of the track, players preparing for games later in the day practice by kicking roughly a gazillion soccer balls every which way. So your jog requires vigilance?and even then, you?ll probably end up getting hit. The track also has an assortment of other distractions, from wandering toddlers and kids riding bikes to the smell of food vendors from the sidelines. No pain, no gain.