Originally Posted by CheGiantForLife

I think cyclists are the best conditioned athletes on the planet.

Today, I rode up a 10% grade for 3 minutes and was maxed out.
Had to switch back a few times. Fully winded and legs burning.
It was like .2 or .3 miles at the most.

I can not fathom how people do this for several miles !!
What do they do for Tour de France?
What kind of distances grades durations do you tackle?