Here are a few suggestions for your next trip from Rüppurrer Tor, Karlsruhe

In 2 hours, you can reach Strasbourg, Basel, Frankfurt am Main, Stuttgart.

In 3 hours, you can reach Paris, Luxembourg, Dudelange, Köln, Schifflange, Bettembourg, Düsseldorf, Merl, Strassen, Bertrange...

In 4 hours, you can reach Zürich, Esch-sur-Alzette, Munich, Bern, Liège, Pétange, Winterthur, Luzern, Essen, Biel/Bienne...