Last year's Tour de France champion Sir Bradley Wiggins has admitted that he might never enter the competition again, having achieved his aim of winning it.

Wiggins said that the amount of effort and "sacrifice" that went into winning the Tour last year would be too much to manage again.

"For me it was always about winning the Tour," The Guardian quotes Wiggins as saying. "I've done that. If I'm honest I don't think I'm prepared to make those sacrifices again that I made last year, with my family and so on.

"I've achieved what I've achieved. I'm incredibly happy with that. If I do anything else after this it will be stuff I want to do, stuff that I'm willing to train hard and sacrifice for really.

"For me it was always about winning the Tour, that was a huge thing for me, a huge journey; I've been doing that four years. I don't know if I'd want to go through all that again to be honest. I've always had other goals and there are other things I'd like to try to do."

Wiggins has also won four gold medals at the Olympic Games.