Here are a few suggestions for your next trip from Arroa(Zumaia)
In 2 hours, you can reach Bilbao.
In 5 hours, you can reach Zaragoza, Bordeaux, Valladolid.
In 6 hours, you can reach Madrid.
In 7 hours, you can reach Paris, Toulouse.
In 8 hours, you can reach Barcelona, Valencia, Gijón.
Book - Trainline
Book - SNCF Connect
Book - Deutsche Bahn