Here are a few suggestions for your next trip from Westerland(Sylt)

In 3 hours, you can reach Hamburg, Esbjerg.

In 4 hours, you can reach Odense, Kolding, Horsens, Vejle.

In 5 hours, you can reach Århus, Roskilde, Bremen, Herning.

In 6 hours, you can reach Berlin, Copenhagen, Malmö, Aalborg, Frederiksberg, Randers, Essen, Hvidovre, Silkeborg.

In 7 hours, you can reach Köln, Frankfurt am Main, Düsseldorf, Dortmund, Helsingborg, Enschede, Dresden, Arnhem.

In 8 hours, you can reach Amsterdam, Utrecht, Szczecin.