| 2 hairpin turns |
| #87 toughest climb of Basque Country |
| #74 most elevation gain of Basque Country |
| #66 longest climb of Basque Country |
Alto de Aztiria from Zerain is a climb in the region Basque Country. It is 5.2km long and bridges 323 vertical meters with an average gradient of 6.2%, resulting in a difficulty score of 227. The top of the ascent is located at 595 meters above sea level. Climbfinder users shared 0 reviews of this climb and uploaded 0 photos.
Road name: GI-3520
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| 7 km/h | 00:44:43 |
| 11 km/h | 00:28:27 |
| 15 km/h | 00:20:52 |
| 19 km/h | 00:16:28 |