kipfarah wrote:
All you need for running is a pair of legs.
A huge percentage of this world doesn't even know if they have a talent for biking...
I find all of this "percentage of the world" stuff totally irrelevant. Ditto the "who makes more money" stuff. The question was "who is the better athlete- world class marathon / world class cyclist." On this earth, right now, there are world class marathoners. On this earth, right now, there are world class cyclists. Which, of these two existing parties, is the better athlete?
My vote goes with the cyclist. There is more to athletics than simple cardiovascular biology. As has been pointed out, the range of variables is much greater in cycling than in running. In order to be a world class cyclist, you have to be extremely good at MORE stuff than is demanded of a world class marathoner. Athletics are about concentration, agility, reflexes, etc just as much as they are about how much oxygen your physiology processes or whatever else. A marathon runner just has to run, one foot in front of the other, really fast for about two hours. That's pretty much all that is demanded of a world class marathoner. A world class cyclist has a $hitload more stuff to pay attention to than a runner, if he is going to be a world-beater. Plus, he has to do it for longer. That makes a difference, guys. The amount of time you have to be "on" mentally in a competition makes a difference. A world record marathon race is run in a little over two hours. No world class bicycle race on earth is finished in even twice that time. The stakes are higher for the cyclist, in the event of a mistake or miscalculation. These things all factor into being a world class athlete.
There's no question, cyclist takes it. If you all want the marathoner to best the cyclist in some metric, you've got to change the question.