Kara Goucher’s marathon best is only a few minutes slower than the half marathon I ran a few days ago, so it goes without saying that I am in awe of her.  But along with tales of making Olympic teams and taking world championships, Kara’s memoir details the rampant harassment and exploitation that ripples out from Nike’s inner circle to its best athletes. Running takes guts--and so does exposing corruption; if I didn’t think this athlete was great before, I certainly do now.