The GR11 is an 820km long-distance trek that traverses the Spanish Pyrenees from Irun on the Atlantic coast to Cap de Creus on
...The GR10 is one of a number of official long distance paths (Grandes Randonnees) in France. This classic long distance walk across the Pyrenees from the Atlantic to the Mediterranean takes about 50 days to complete but the author divides it into sections conveniently tackled in a fortnight's holiday, with details of accommodation & transport.