Athletic Doping Winners of the Tour de France The Tour de France has been running for over a century and is now considered as one of the most prestigious cycling event in the world. But even such a prestigious event cannot be safe from certain issues, especially its participants. Since the year it was conceived, the Tour de France has been plagued by allegations of doping. This infographic will center on the issue of using performance enhancing drugs or doping. For more info, please visit no deposit free bet.