Sunscreen for Athletes

Normal people need sunscreen. Athletes, however, need super sunscreens that can not only protect their skin for hours on end but can also remain water- or sweat-resistant without causing any irritation (because who wants to be bothered by SPF when there are already enough physical frustrations in training or racing?). We asked top-level runners, rowers, swimmers, softball players and other athletes to tell us which sunscreens work best for them without fuss, muss, sweat runoff or icky white residue.