Col de Marie-Blanque
Col de Marie-Blanque is a mountain pass in the western Pyrenees in the department of Pyrénées-Atlantiques in France. The pass is situated south-east of Oloron-Sainte-Marie and connects the valleys of the Aspe and the Ossau rivers.
Details of the climb
The western side of the climb, starts from Escot on the N134. The climb is long at an average gradient of 7.75%. Although relatively short, there are several long sections with gradients in excess of 13%.From Louvie-Juzon, the climb is long. Over this distance, it gains at an average gradient of 4.1%. The climb proper starts at Bielle on the D934 from where it is long, gaining at an average gradient of 5.1%, with a maximum of 8.5% near the start. En route, the climb passes the Plateau de Bénou.
Tour de France
The pass was first used in the Tour de France in 1978 and has been crossed 15 times by the tour, most recently in the 2023 Tour de France.Appearances in Tour de France
| Year | Stage | Category | Start | Finish | Leader at the summit |
| 2023 | 5 | 1 | Pau | Laruns |  Jai Hindley.png" />Jai Hindley|AUS |