This is a difficult route that allows you to explore the northern plains of this territory. Being a hard route, especially for its distance and not so much by the characteristics of the used trails, it leads us to the discovery of the north and east plains of this territory. It starts towards the north, side by side to the Guadiana river, inflects for East following next to the Enxoé stream until it parts from route 4 and go to A do Pinto, after which it finds again the black route. Here it goes towards Serpa, passing the village of Sta Iria and join route 2.