In the Malerreka Valley, flanked by several hills such as that of Mendaur, lies the elegant town of Doneztebe/Santesteban, which was a centre for merchants in the Middle Ages and continues to live from commerce. The route leaves from Doneztebe/Santesteban for Irurtzun (52 km).
5 kilometres away stands the Torre de Donamaria or Casa de las Tablas; this 15th-century Gothic tower retains the essence of the medieval constructions of the wet valleys of the north.
On arriving in Urrotz the cyclist can make a detour to the mountain lakes known as the Reservoirs of Leurtza, an evocative green landscape with a great variety of flora and fauna.
Leaving the High Bidasoa behind we come to the Basaburua Valley, an extensive green mantle with country houses scattered between clearings and woodland. At the capital of this valley, Jauntsarats, there is a wood of centenary oaks which can be explored thanks to a marked path.
Picking up the EuroVelo 1 Route again we arrive in Irurtzun, a town with a strong industrial development due to its strategic location. It is here alongside the dam where one of the sections of the Plazaola Greenway ends.
Caution zones and blackspots. There are some blackspots along the route where special caution must be taken.
DONEZTEBE/SANTESTEBAN. When you leave the town centre along Mercaderes street, the route continues upwards along a paved road (old road to Donamaria and Gaztelu). Pay attention to some steep sections.
VENTAS DE DONAMARIA. At the intersection of the NA-204, at the Ventas de Donamaria – Donamariako Bentak, be careful when taking the direction to Oiz.
IRURTZUN. In the area of Dos Hermanas, near Irurtzun, the route crosses two consecutive tunnels; of 150 metres and 100 metres respectively, to continue under the A15 motorway which has shared traffic. (From March the tunnels will be lit up and will have traffic lights for cyclists and motor vehicles).