We know that Chrissie Wellington isn't racing this year but so she's really letting down her hair for much more relaxed look. Do you agree?
Check out this video as the 4X Ironman Champ goes for a 5K run in Köln, Germany.
Not only does she let down her hair, but she also hanging out with a very strange version of Big Bird from Sesame Street.
The German athletes in the video below show that you don't have to be in Kona at the annual underwear run to take running a bit less seriously.