This is an account of trekking the length of the Spanish Pyrenees from coast to coast between 2004 and 2011. The majority of the walk was on the GR11,a long-distance footpath in Spain, and also parts of the high French Pyrenees around Gavarnie and Cauterets. The description of the walk gives details of the landscape, villages and local history of the area, including the route through the Basque Country, Navarra, Aragon, Andorra and Catalonia. It also gives the authors account of the day to day experiences of walking through a varied terrain of delightful hanging valleys, high passes reaching nearly 3000 m altitude and alpine meadows. Nights were spent camping in the mountains, hostels and mountain refuges. Although this is not a travel guide to a particular route, it supplements them by relating what is in the area and what other travellers have found in the past. There are 40 colour photographs and some details of GPS usage on the GR11.