The steepest kilometer of the top cycling climbs in France. From this page you may navigate to the top 10 steepest bicycling climbs in FR. French steepest bike climbs we have documented are featured in the slideshow below. Scroll down to access France's steepest 2 kilometer Top 10 Bicycle Climbs "Table". The cycling climbs covering the steepest 2 km gradients in FR, and some of France's hardest and most scenic cycling climbs are, in order of steepness, 1. Col d'Elhursaro (Arnéguy), 2. Chamrousse (Séchilienne), 3. Col du Grand Colombiere - Artemare, 4. Artzamendi, 5. Super Lescun, 6. Col de Marie Blanque - Escot, 7. Col de Bagargi, 8. Route de Chalais, 9. Mur de Péguère, and 10. Col d'Errozate.