There has been much talk in recent weeks about whether or not the threat of the Zika virus would stop athletes from attending the Olympic Games. It appears even some cyclists have opted not to participate, with Tejay van Garderen (USA) and Ryder Hesjedal (Canada) opting out of the race.

"I know the risks are small, and there are precautions you can take, but the fact is I just don't want to risk bringing anything into the house that could potentially have an effect, however small the chances are," van Garderen told Cyclingnews.

van Garderen says his decision came slowly, but missing the Olympics allows him to target the Vuelta a Espana after having a short break post Tour de France.

"It came in stages. At first I thought I would still do it, then I accepted it, and now I'm actually embracing it. I looked at my schedule - I do the Tour de France and then I get to go home. I won't have anything in the back of my mind - having to stay sharp the day after Paris. I can take a breather - I haven't been home since January - I can spend some time with the family. I'll come back and race the Vuelta."

Hesjedal seemed to be of the same opinion, ending his run of three straight Olympics. He tweeted “Been thinking long and hard about Rio and I've decided to take myself out of the selection. Long season ahead. Best of luck Team Canada!!”