| 1 hairpin turn |
| #77 longest climb of Grenoble |
Tunnel du Mortier from Autrans is a climb in the region Grenoble. It is 9.2km long and bridges 404 vertical meters with an average gradient of 4.4%, resulting in a difficulty score of 237. The top of the ascent is located at 1445 meters above sea level. Climbfinder users shared 0 reviews of this climb and uploaded 0 photos.
Road names: Route de la Sure & D 218
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| 7 km/h | 01:18:37 |
| 11 km/h | 00:50:02 |
| 15 km/h | 00:36:41 |
| 19 km/h | 00:28:58 |