Five climbs lead to the finish: the Col de la Colombière (15.9 km at 7 percent), the Col de la Croix Fry, the Col de la Forclaz de Queige, the Col du Pré (12.6 km at 7.8 percent) and the Montée de Bisanne (12.4 km at 8.3 percent). Race director Christian Prudhomme singled out the Col du Pré and Bisanne pairing, and said it is probably one of the first times the Tour has stayed below 2,000 meters in the Alps.
Cycling Weekly points out that the Bisanne tops out about 4 km before the line, which makes this a summit finish by ASO’s definition. The count of summit finishes in the 2027 route is three: the Grand Colombier, Les Saisies and the Col du Portet.
Warren Barguil won on Bastille Day in 2017, the first French winner on July 14 in 12 years, and Tadej Pogačar won the Col du Portet stage on the same date in 2021.