The route starts in Errezil and after passing through some of the most beautiful places in the interior of Gipuzkoa such as the Aizarna valley and the hermitage of Santa Engracia and reaches the town of Zestoa.
PR Gi-143: Errezil – Zestoa / Zestoa – Errezil
- Distance in meters: 13.700 m
- Ascent level difference: 596 m
- Descent level difference: 863 m