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 durability the midsole mixes ultralight Lightstrike Pro cushioning with durable Lightstrike EVA.