Following on from the RACE map of Santiago itself I can recommend the R A C E (The Royal Automobile Club of Spain) map of the Camino Frances as a map of the route as a whole, though perhaps not for use on the route but for planning or loking at afterwards.
Mapa Turistico del Camino de Santiago
Publisher - Editorial Everest
Not only does it cover the route on a single map at 1:500,000 but it also has details of all the albergues/refugios open at the time marked and described (in Spanish) as well as some photos. Although the Camino del Norte is not marked as a route it is within the area covered by the map as are the Caminos Ingles, Primitivo and Finisterre.