All the masage, team cars and tailored meals doesn't stop the incredible amount of suffering that these riders go through day after day.

Anyway, I've always felt that the most physically demanding sports were cycling, cross country skiing and speed skating.

As far as who suffers the most, it's easily bike racers. I can't even imagine how much the riders suffered in last years TDF TTT.

Marathon runners? How many people finished this years NYC marathon?