As cycling fans on the roadside and watching at home on television marvel at the stunning scenery on view at the Tour de France, organisers ASO are already planning the next editions of the Grande Boucle. Work on each year’s route begins three years ahead of time, when Tour director Christian Prudhomme settles on the city that will host the Grand Depart for that edition. After that, he decides which direction the race will set off in, and starts to pick the departure and arrival towns for each...