Col de Portes / Calvaire de Portes from Contrevoz is a climb in the region Ain. It is 17.6km long and bridges 713 vertical meters with an average gradient of 4.1%, resulting in a difficulty score of 437. The top of the ascent is located at 1006 meters above sea level. Climbfinder users shared 1 review/story of this climb and uploaded 3 photos.
Road names: D 32 & D 99
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Beautiful route without too much traffic. Views of the Grand Colombier at the start and the Rhône valley at the end;
Belle route sans trop de circulation. Vue sur le Grand Colombier au début puis sur la vallée du Rhône à la fin;
| 7 km/h | 02:30:55 |
| 11 km/h | 01:36:02 |
| 15 km/h | 01:10:25 |
| 19 km/h | 00:55:36 |
