Just like ST means “stability,” Adizero means “fast.” And for Adidas, best running shoes are fast running shoes. The Boston 6 is a serious racing shoe for marathoners with ambitious time goals. Although it’s a lightweight marathon shoe, it has more heel cushioning than its competitors shoes to keep you going the distance when the distance is really, really long. What’s more, the price is quite reasonable. The Boston 6 are the best price Adidas running shoes on this list.