Here are a few suggestions for your next trip from Altza(Donostia)

In 3 hours, you can reach Bilbao.

In 4 hours, you can reach Bordeaux.

In 5 hours, you can reach Zaragoza, Valladolid.

In 6 hours, you can reach Madrid, Toulouse.

In 7 hours, you can reach Paris, Barcelona.

In 8 hours, you can reach Valencia, Córdoba, Rennes, Gijón.