This is a new challenge from Redbull : 2 coasts, 40 kilometers and over 400 competitors: This is Red Bull Coast 2 Coast, the toughest kitesurfing marathon in the world. This years event has racers hauling ass thorugh the open ocean, starting in Germany and ending on the coast of Denmark. Cold temperatures, and they need to be strong in the arms ! All of the participants have GPS tracker, just in case !