Here are a few suggestions for your next trip from Holzdorf(b Weimar)

In 3 hours, you can reach Berlin, Dresden, Nürnberg.

In 4 hours, you can reach Munich, Frankfurt am Main.

In 5 hours, you can reach Hamburg, Köln, Stuttgart, Düsseldorf, Ústí nad Labem, Dortmund, Bremen.

In 6 hours, you can reach Prague, Linz, Basel, Liberec, Poznań, Liège, Salzburg, Szczecin, Strasbourg, Innsbruck...

In 7 hours, you can reach Paris, Luxembourg, Vienna, Brussels, Pilsen, Utrecht.