Here are a few suggestions for your next trip from Leiden

In 2 hours, you can reach Amsterdam, Rotterdam, Antwerp, The Hague.

In 3 hours, you can reach Brussels, Ghent.

In 4 hours, you can reach Paris.

In 5 hours, you can reach London.

In 6 hours, you can reach Luxembourg, Lyon.

In 7 hours, you can reach Berlin, Hamburg, Birmingham, Esch-sur-Alzette.

In 8 hours, you can reach Marseille, Geneva, Munich, Liverpool.

In 9 hours, you can reach Zürich.

In 10+ hours, you can reach Madrid, Rome, Budapest, Warsaw, Vienna, Stockholm, Prague, Copenhagen, Zagreb, Bratislava...