Here are a few suggestions for your next trip from Köln Süd

In 2 hours, you can reach Köln, Düsseldorf, Essen, Liège, Frankfurt am Main, Leuven, Dortmund, Arnhem.

In 3 hours, you can reach Brussels, Antwerpen, Utrecht, Stuttgart, Eindhoven, Anderlecht, Schaerbeek, Namur, Nijmegen, Molenbeek-Saint-Jean...

In 4 hours, you can reach Paris, Amsterdam, Luxembourg, Rotterdam, The Hague, Gent, Charleroi, Tilburg, Strasbourg, Brugge.