In 2 hours, you can reach Hamburg, Bremen.
In 3 hours, you can reach Berlin, Kolding.
In 4 hours, you can reach Odense, Frankfurt am Main, Esbjerg, Düsseldorf, Vejle, Essen, Enschede, Dortmund, Dresden.
In 5 hours, you can reach Copenhagen, Århus, Köln, Utrecht, Frederiksberg, Szczecin, Horsens, Nijmegen, Hvidovre, Roskilde...