1) Endurance game 
The Red Bull Dolomitenmann is billed by its organizers as `the world`s toughest team relay race`. The race is held yearly in September in the East Tyrolean, or Dolomite Mountains of Austria, near the city of Lienz. The founder and organiser is Werner Grissmann, a former World Cup skier and self-proclaimed `tough guy`. 110 teams typically star...