(0h0min; 0 kms) Ochagavía (750m). Following the road uphill along the river Anduña, you will pass by an old building with the sign "estación patatera" (potato station). A track to the right heads steadily uphill among pine trees and boxwood to the hill tops. After 2.8 kilometres you pass an area of fields next to Juanxeberradre cottage. The track continues along the ridge, and at times the view towards Abodi is fabulous. Ignore a left-hand fork (5.3 kms), then another on the right (6.7 kms) which heads down to Ezkaroz and another one to the right (7.7 kms) before passing a bend (10 kms) where a hut in a precarious state stands over to the left.

(2h35min; 11.4 kms) Zotrapea (1.302m). The track crosses another one, which comes from the Laza pass to the north and leads to Vidángoz to the south. Soon afterwards you come out at a clearing in the woods, – the view over the Pyrenees is spectacular – you pass by Lakuaga pond (12.5 kms) and two kilometres later a crossing where you will continue straight ahead. Just after that, a track to the right leads up to Kakueta (1,583m). You continue along the track for a kilometre as far as...

(3h40min; 15.4 kms) collado de Millingrate Kakueta (1,356m), where you abandon it on a hair-pin bend. You follow the ridge to the east along open terrain, following the all-terrain tracks, as far as Saitsederra col (1,360m). The path heads back into the woods where a path emerges, taking you down the steep slope through beech forest towards the...

(5h05min; 19.7 kms) Ermita de Idoia (834m). Drinking fountain. A pleasant woodland trail takes you to Isaba. You pass another drinking fountain.

(5h25min; 21.1 kms) Isaba (790m).