I love my old 1990s IGN map of the European Caminos, as it shows the traditional routes rather than the more codified contemporary commercial & waymarked ones -- but it's probably become impossible to purchase.
There's probably still some version of it though still in existence.
But for the
Francès, my favourite pseudo- "map" (don't have one now, I've lost or seen destroyed about 6 copies of it,
curses !!!), is one produced by IIRC the Castilla tourist board, which has a geometrically accurate depiction of the Camino (including the
Somport/
Aragonès variant) with useful estimates of distance to Santiago from each town and
pueblo and special Camino location.
No strictly geographic information on it as such, but a combination of its information with some more general maps and some other sources, including comparing distances walked from here to there with the date stamps on your
Credencial, can be terribly helpful.
There's a nice one here though :
http://www.chemins-compostelle.com/sites/all/modules/itineraire/carte.php?id=43