Sur le Thier
Aywaille, Belgium
The Sur le Thier is a col with a length of 698 meter. This is a category 4 col. It is located in Aywaille, Wallonie, Belgium. The average grade of this col is 12.7% with a maximum of 22%. The Sur le Thier ascents from 154 meter at the start, to 242 meter at the top, with a total of 89 ascending meters.
Profile
Facts
| Distance | 698 m |
| Elevation gain | 89 m |
| Average grade | 12.7 % |
| Maximum grade | 22 % |
| Climb category | 4 |
| Minimum elevation | 154 m |
| Maximum elevation | 242 m |
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Description
The steepest road in Belgium.