johhnie walkers Ingles guide is the one to have. If you have 2 days & like train trips, Bilbao to Ferrol takes 2 days ,around 200 stops ,overnight in Oviedo is recommended ,a city worth exploring. You'll also see a lot of the northern coastal route regards Robin Dorkings
This site is run by Ivar at in Santiago de Compostela.
This site participates in the Amazon Affiliate program, designed to provide a means for Ivar to earn fees by linking to Amazon