| 12 hairpin turns |
| #70 toughest climb of Jura |
| #26 most elevation gain of Jura |
| #46 longest climb of Auvergne-Rhône-Alpes |
Col de Portes from Montagnieu is a climb in the region Ain. It is 22.6km long and bridges 865 vertical meters with an average gradient of 3.8%, resulting in a difficulty score of 492. The top of the ascent is located at 1005 meters above sea level. Climbfinder users shared 0 reviews of this climb and uploaded 0 photos.
Road names: Route de Montagnieu, Route de Seillonnaz, Route de Messieurs, Rue des Alinières, Route de la Drivonne, Rue de la Mairie, Montée de l'Église, Rue du Bac à Thomas, Route d'Ordonnaz & Route
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| 7 km/h | 03:13:22 |
| 11 km/h | 02:03:03 |
| 15 km/h | 01:30:14 |
| 19 km/h | 01:11:14 |