Two chaotic hilly stages and a very nervous sprint finale have opened up the Tour de France and now there will be another different test. On stage 4 of the Grand Boucle the riders tackle the high mountains for the first time, with the high-altitude Col du Galibier on the menu of a difficult day where Richard Carapaz will try to defend his lead against the likes of Tadej Pogacar, Jonas Vingegaard and Remco Evenepoel.
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