The Tour de France is a pretty grueling bicycle race.  they race 21 stages over three weeks!
That's an herculean task I must say
Over the years since the race was founded in 1903, there have been many great cyclists who competed.  There have also been some cheaters too
Cheaters ? That sounds weird ! 
One such cycling cheater had a cork in his mouth attch to a string, which was also tied to a car.  If caught, he would just open his mouth and the cork would fly away.
ok then! Who is the current world champion?
Currently the Tour de France champion is Chris Froome from the United Kingdom
Is he also the Olympic champion?
Unfortunately his Tour de France performance did not translated to Olympic Gold