Pfft. This all pales in comparison to the triathlon. Particularly this triathelete:triggrhappy94 said:All pride aside, what do you thing is the most physicly demanding sport and why

You know why? He's running North America, Swimming the Atlantic, and Cycling across Asia, all in 18 months. [http://www.guardian.co.uk/uk/2010/mar/24/global-triathlon-dan-martin]
Yes, I know it's not really a sport of itself, but wow!