| 1 hairpin turn |
| #32 toughest climb of Île-de-France |
| #17 most elevation gain of Île-de-France |
| #23 longest climb of Île-de-France |
Bois de Marines via Le Rosnel is a climb in the region Île-de-France. It is 2.9km long and bridges 127 vertical meters with an average gradient of 4.4%, resulting in a difficulty score of 86. The top of the ascent is located at 220 meters above sea level. Climbfinder users shared 1 review/story of this climb and uploaded 0 photos.
Road names: Voie Communale No 3 de Rosnel à Theuville & Chemin de Marines au Rosnel
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A very long climb for the region. The first part is a long false flat climb, but it's not to be ignored as the westerly wind often blows hard across the fields. The steepest part begins at the hamlet of Le Rosnel and ends in the woods.
Ascension très longue pour la région. La première partie s'effectue sur un long faux plat montant mais elle n'est pas à négliger car le vent d'ouest souffle souvent et parfois fort au milieu des champs. La partie la plus raide commence au hameau du Rosnel et finit dans les bois.
| 7 km/h | 00:24:40 |
| 11 km/h | 00:15:42 |
| 15 km/h | 00:11:30 |
| 19 km/h | 00:09:05 |
