Col de Porte


The Col de Porte is a mountain pass situated in the Chartreuse Mountains in the Isère department of France, between Le Sappey-en-Chartreuse to the south and Saint-Pierre-de-Chartreuse to the north. It sits on the D512 between Grenoble and Chambéry, and prior to 1998 was often crossed in conjunction with the Col du Cucheron and the Col du Granier.
To the east is Chamechaude, the highest summit in the Chartreuse Massif. There is a small ski resort situated near the col.

Cycle racing

The Col de Porte is regularly used in the Critérium du Dauphiné Libéré. In the sixth stage of the 1977 Critérium, Bernard Hinault fell on the descent from the Col de Porte leading to Grenoble when he was alone in the lead, 1'40" ahead of his competitors. Despite the fall, he won the stage at Bastille in Grenoble ahead of Lucien Van Impe and Bernard Thévenet.

Details of the climb

From Grenoble, to the south, the climb via the D512 is long, gaining in altitude, at an average gradient of 6.3%, with the steepest section being at 10%. from the summit, it passes the Col de Palaquit.

Tour de France

The pass was first included in the Tour de France in 1907, after which it was used in the next three tours, and then not again until 1947.

Appearances in Tour de France since 1947

Since 1947, the passages which have been categorized have been:
YearStageCategoryStartFinishLeader at the summit
1998161VizilleAlbertville
1989191Villard-de-LansAix-les-Bains
1978171GrenobleMorzine
1971101Saint-EtienneGrenoble
1970121Thonon-les-BainsGrenoble
1968181Saint-EtienneGrenoble
1965171BriançonAix-les-Bains
1963151Saint-EtienneGrenoble
1962191BriançonAix-les-Bains
196192Saint-EtienneGrenoble
1958211BriançonAix-les-Bains
1951211BriançonAix-les-Bains
1948142BriançonAix-les-Bains