To hear Sarah A. Ames talk about distance running is to realize that she approaches it differently than you.She says things like: “Could I still feel my shin a little bit? Sure.” As if any sensation of feeling renders meaningless the fact that her shin was swollen nearly twice its normal size.Later, she mentions as an aside: “You can get through a marathon without much training.”So maybe it is no wonder that when asked if she ever worried she would fail in her latest, impossible-sounding challenge …