Tour de France: Why Alpe d'Huez is called "the greatest climb in cycling"

The 2018 Tour de France reaches the legendary Alpe d'Huez on Thursday 19 July.

In 2015, 5 live Sport's OJ Borg climbed the mountain's famous 21-hairpins to find out why it's dubbed "Cycling's Wembley".

Watch more: What is it like to cycle Alpe d'Huez?

Listen:BeSpoke review Geraint Thomas' ride to yellow