Chris Froome: These next two days are the biggest of the Tour de France

The defending champion says much of the race will be decided on the slopes of the Col du Galibier and the summit finish to the Col d'Izoard

Chris Froome on stage 16 of the 2017 Tour de France (Sunada)

(Image credit: Yuzuru SUNADA)

Chris Froome says that the 2017 Tour de France classification contenders are facing the biggest days so far, Wednesday and Thursday, over the Col du Galibier and the Col d'Izoard summit finishes.

Stage 17 on Wednesday climbs to 2,642 metres over the Galibier and descends 28 kilometres down to Serre Chevalier. The 18th stage, for the first time in Tour history, finishes on top of the Col d'Izoard at 2,360 metres on Thursday.

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Gregor Brown

Gregor Brown is an experienced cycling journalist, based in Florence, Italy. He has covered races all over the world for over a decade - following the Giro, Tour de France, and every major race since 2006. His love of cycling began with freestyle and BMX, before the 1998 Tour de France led him to a deep appreciation of the road racing season.