Adidas Adizero Boston 11MID TO LONG DISTANCE RUNNING SHOES MADE IN PART WITH RECYCLED MATERIALS. The Boston Marathon is a race. But it's also a goal, and a training plan and all the days it stays on your mind before the big one. The Adizero Boston 11 Shoes are built for mid to long distance running. They bring a race day feel to training with a propulsive feel that comes from ENERGYRODS, which limit energy loss underfoot. They're fast, but that does not come at the cost of