Not sure this is the best way to unclog the twitter feed. Something like a group in Tweetdeck would work really well to solve that problem.

Though, maybe you can do some neat things with this idea.

First thing that is apparent to me is that there is too much noise. This needs to be reduced in order for me to read this feed. Maybe an up vote system (HN, reddit, etc) to stress important tweets. You could also stress the important tweets with some other metric (number of replies, number of followers, etc).

Second thing that is apparent is that I don't know who half of these cyclists are. I need to know why I am reading x person's tweets. You could expand the bio pages to include more information on the each cyclist (full name, team, rankings, wikipedia link, etc). Also, I want a list of the cyclists that are being tracked.