At 2,067m high, the Croix de Fer deserves to be taken seriously. The climb is the best part of 30km long with sections above 9%. The Croix de Fer featured on Le Cure in 2016 and will sap the legs of Curistas once again on Stage 4 in 2021 to make sure everyone is nicely warmed up for Alpe d’Huez.
The Croix de Fer has a rich Tour history. It has featured 20 times starting in 1947. Such luminaries as Gino Bartili (1948), Fausto Coppi (1952) and Bernard Hinault (1986) have led over the top.