Your questions to Mark Cavendish
8 December 2013 Last updated at 10:43 GMT
He's the fastest man on two wheels, has won 25 stages in the Tour de France and has even got a MBE from the Queen.
But have you ever wanted to know more about the man nicknamed the Manx Missile?
In part 2 of Martin's interview with Mark Cavendish, we put your questions to him.
Click here to see if Mark passed the athletes vs. animals Newsround challenge.