Here are a few suggestions for your next trip from Rennsteig

In 3 hours, you can reach Nürnberg.

In 4 hours, you can reach Berlin, Frankfurt am Main, Dresden.

In 5 hours, you can reach Munich.

In 6 hours, you can reach Hamburg, Köln, Liberec, Stuttgart, Szczecin, Strasbourg, Düsseldorf, Ústí nad Labem, Essen, Dortmund...

In 7 hours, you can reach Prague, Basel, Linz, Pilsen, Wrocław, Liège, Poznań, Salzburg, Innsbruck, Enschede...

In 8 hours, you can reach Luxembourg, Amsterdam.