Here are a few suggestions for your next trip from Alfeld(Leine)

In 2 hours, you can reach Bremen.

In 3 hours, you can reach Berlin, Hamburg, Frankfurt am Main, Essen, Dortmund.

In 4 hours, you can reach Köln, Stuttgart, Düsseldorf, Enschede, Nürnberg.

In 5 hours, you can reach Amsterdam, Munich, Utrecht, Liège, Strasbourg, Nijmegen, Dresden, Arnhem.

In 6 hours, you can reach Brussels, Rotterdam, The Hague, Basel, Odense, Poznań, Groningen, Esbjerg, Anderlecht, Eindhoven...