The Goierri region offers all sorts of nature-related sports.

The Goierri region offers horse-riding.
Hill-walking and trekking (there are now 53 different trails, detailed in the book “Goierri Mendiz Mendi: naturaleza, huella e historia a través de 53 recorridos”), rock-climbing, orienteering, potholing in Aralar, mountain-biking (10 routes through the Goierri listed in a leaflet, and another 8 in Lazkao), horse-riding, etc...
The different sports centres also offer a variety of options.
Telephone: 943 88 05 76