 She did her first Ironman event when she was 55 years old, which, if you're not familiar, an Ironman is a 2.4-mile swim, 112-mile bike ride, and a 26.2-mile run, all at the same time, all on the same day. You have 17 hours to do it. I've done a handful of them, but nowhere near as many as the Iron Nun, Sister Madonna Booter.