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Cols

Day 1
Mont Salève - Cat 4
Col des Aravis - Cat 2
Col des Saisies - Cat 1

Day 2
Cormet de Roseland - Cat 1
Col de L'Iseran - HC

Day 3
Col du Telegraphe - HC
Col du Galibier - HC
L' Alpe d'Huez - HC

Day 4
Col de Sarenne
Croix de Fer - HC
La Toussuire - Cat 1

Day 5
Col du Mollard - Cat 1
Col de la Croix de Fer - HC
Col du Glandon - HC

In general terms, Category 4 climbs are short and easy. Category 3 climbs last approximately 5 kilometers (3.1 miles), have an average grade of 5 percent, and ascend 150 meters (500 feet). Category 2 climbs are the same length or longer at an 8 percent grade and ascend 500 meters (1,600 feet). Category 1 climbs last 20 kilometers (12.4 miles) with an average 6 percent grade and ascend 1,500 meters. Beyond category climbs include an altitude difference of at least 1,000 meters (3,280 feet) from start to finish and have an average grade of at least 7 percent.