It will be remembered as one of the most sensational days in Grand Tour history. Chris Froome was 3 minutes 22 seconds behind Simon Yates in the pursuit of the maglia rosa leading up to stage 19 of the 2018 Giro d’Italia. The Colle delle Finestre, an 18.5km climb sat in the middle of the stage, was the only realistic option to attack the leaders with only two stages to follow. The stage was set for an unbelievable comeback and one of the strongest rides you’re likely to see for years to come. Here Chris explains what it took to pull off such a staggering attack.