Magnificent walk from the sea to the mountains, or vice versa, along the riverside forest that borders the left bank of the Besaya and Saja rivers and the San Martín de la Arena estuary.

Basic Facts
	20,15 km: 8 km of Greenway + 12 km of pedestrian bike lane.
	Suances - Barros (Los Corrales de Buelna), passing through Santillana del Mar, Torrelavega and Cartes. Cantabria
	Trekkers, skaters and cyclists
	Note: Steep incline at the entrance to the La Viesca Park.
	Asphalt and compacted soil
	The Northern route of the "The Way of St. James"
	43.42567, -4.034613
	43.285858, -4.076207