From Riano by the N-621 (León-Santander) passing through the town of Boca de Huergano, where comes the road from Guardo, we continue along the N-621 to Portilla de la Reina and here we take the detour by the LE -2703 that Pandetrave port leads directly to Santa Marina de Valdeon. If you come from the northeast and center of Spain, surely that will take you through the town of Guardo in Palencia by the CL-615, P-215 and LE-215 to the town of Boca de Huergano where, turning right you can follow the route along the N-621 to Portilla de la Reina to take the detour to Santa Marina de Valdeón by the L-2703. From Riano also be accessed by following the N-625 to the port of Pontoon where he has to take the detour by the LE-2711 to Posada de Valdeon and from here to Santa Marina de Valdeon following the LE-2703.