The name 'Croix de Fer' refers to the iron cross that has stood at the summit since at least the mid-19th century.
The pass connects the Department of Isère to the Department of Savoie.
It is one of the highest paved mountain passes in the French Alps open to vehicular traffic.
The climb from the Maurienne side is widely considered more challenging due to steeper sections near the end.
The mountain range surrounding the pass is known for the Aiguilles d'Arves, three distinct needle-like granite peaks.
During the winter, the road is buried under heavy snow and remains inaccessible to cars.
Col de la Croix de Fer is a high mountain pass in the French Alps, reaching an elevation of 2,067 meters. It serves as a legendary climb in the Tour de France, having been featured in the race over 20 times since its debut in 1947. The pass links the Romanche valley in Isère to the Maurienne valley in Savoie. It is characterized by its dramatic switchbacks and rugged alpine scenery, situated between the Aiguilles d'Arves peaks and the Belledonne massif. The summit features a namesake iron cross, which serves as a historic navigational marker for travelers. Cyclists frequent the route for its significant gradient, which averages approximately 5% to 7% depending on the ascent side. The area remains a central hub for mountain cycling tourism and high-altitude hiking during the summer months.
The summit area near the historic iron cross, overlooking the valley descent toward Saint-Sorlin-d'Arves.
Check the weather forecast for sudden high-altitude temperature drops even in mid-summer.
Bring wind-resistant layers for the descent, as wind speeds at the summit can be significantly higher than in the valleys.
If cycling, ensure your bike is equipped with low gearing suitable for sustained mountain climbing.
Attempting the pass during early spring or late autumn when snowbanks may still block the roadway or pose avalanche risks.
Closed to vehicular traffic during the winter and spring months due to snow accumulation.
