Here are a few suggestions for your next trip from Köln-Ehrenfeld

In 2 hours, you can reach Köln, Liège, Düsseldorf, Essen, Brussels, Frankfurt am Main, Anderlecht, Schaerbeek, Leuven, Molenbeek-Saint-Jean...

In 3 hours, you can reach Antwerpen, Gent, Utrecht, Charleroi, Stuttgart, Eindhoven, Tilburg, Strasbourg, Namur, Lille...

In 4 hours, you can reach Luxembourg, Paris, Amsterdam, Rotterdam.