The Cares Trail or Ruta del Cares is one of the most popular treking paths within the Picos de Europa, the route is situated between the province of León and Asturias, in Spain. It runs from the Asturian village of Puente Poncebos to Posada de Valdeón through Caín in Leon along the Cares Canyon. In the old times, the route was the only way to reach both towns during the snow seasons in the winter.