The Udana is situated in Basque Country.
Starting from Legazpia,
the Udana ascent is 8 km long. Over this distance, you climb 136 heightmeters.
The average percentage thus is 1.7 %.
Since 2005, the Udana will be/was climbed in the following big tour stages:
Vuelta España 2020 : Irun - Arrate. Eibar on 20/10/2020