Dirt bike races are nothing like regular bicycle races. I love watching bicycle races. Those athletes, in my opinion, are some of the fittest people in the world. To get up everday for weeks on end and compete on the level they do is mind boggling. As a recreational bicycler I understand how hard some of the stuff they do is. Sprinting for two miles after riding 100+ would be something no one on these boards could do easily. I have a lot of respect for those who can.