Here are a few suggestions for your next trip from Geisingen

In 2 hours, you can reach Zürich, Winterthur, Sankt Gallen.

In 3 hours, you can reach Schaan, Vaduz, Triesen, Basel, Frankfurt am Main, Eschen, Bern, Mauren, Stuttgart, Luzern...

In 4 hours, you can reach Paris, Luxembourg, Munich, Dudelange, Köln, Schifflange, Bettembourg, Düsseldorf, Merl, Lugano...