Nature and trekking
These are areas that are open 24 hours a day — such as Aizkorri-Aratz, Aralar, The Aia Crags, Pagoeta and the Leitzaran valley. And Gipuzkoa's rugged terrain makes it ideal for hikers too. As well as the innumerable signposted trails criss-crossing the mountain ranges of Aralar and Aizkorri and the paths leading up to the mountain summits, Gipuzkoa also has another complex network of long-distance trails. These are the so-called "GRs", which signal more ambitious routes. You can walk one section of any of the routes or take on a whole GR over a period of several days.