There are three main trails to hike through the Pyrenees. First the GR10, which goes from Banyuls-sur-Mer on the Mediterranean Sea to Hendaye on the Atlantic coast on the French side of the frontier. Second the GR11, also called Ruta Transpirenaica in Spain, is more or less parallel to the GR10 but on the Spanish side of the border. Third the Haute Randonnée Pyrénéenne (HRP), which is said to be more challenging than the GR10 or GR11, follows the border through mountains and passes.
