No kidding.  I run 5k on most of my lunch breaks and the trail I run is about 2.5K long, so I park, run to the end, turn around and run back.  This trail is like almost the entire length of my town, so she's going out and swimming from one end of my town to the other.  I just don't see how that's possible.  If she is truly swimming 2.5K a day you can fucking bet it takes all damn day and I bet she has to take a break for lunch in the middle.