Hola Josef,

A nice route that I recomend you if your intention is getting to Galicia is to follow the route of the pilgrims ( se llama el camino de Santiago). "oficially "...in a way...starts in St Jean Pie du Port in south France . After crossing < Los Pirineos > you will arrive to Roncesvalles < Primera parada de España > After you just have to follow a YELLOW ARROW during aproximately 900 km and you will get to Santiago de Compostela. Most of the way is through traffic free paths. Also let you know that if you get the pilgrims passport ( one euro), you will be able to sleep on hostels for 3 euros,some of the for free and on camps for free. You will get fantastic food ( Pilgrims menu) for about 6 euros ...with starter, main course, desert..bread and wine )..and finally you will have the chance to meet plenty people along the way. I did it on my own three years ago and it was Great...!! If you want more info let me know.
Silvia