From Château-Queyras (France), the climb is 20.5 km long at an average gradient of 6.6%.
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From Casteldelfino (Italy), the climb is 22.4 km long at an average gradient of 6.5%.
Col. | Livinallongo del Col di Lana | Col du Lautaret | Col des Aravis | Col | South Col | Col de la Colombière | Col de Joux Plane | Col, Ajdovščina | La belva col mitra | Col Hutchinson | col | Ouvrage Col du Granon | Col Williamson | Col. William Rhett House | Col. Sam McLaughlin's | Col'n Carpenter | Col Kinnear | Col de Tende | Col de l'Aulp | Col de la Colombiere | Col Allan | Bottle en ''col de cygne'' (Swan neck duct) used by Louis Pasteur |