Zarautz-Aia ascent
![Zarautz-Aia ascent](http://media.guregipuzkoa.net/photo/1002733/1002733_s.jpg)
June
A popular cross-country run that is extremely tough as the result of the constant uphill slope of the 11 km route that runs from Zarautz to Aia.
June
A popular cross-country run that is extremely tough as the result of the constant uphill slope of the 11 km route that runs from Zarautz to Aia.