Here are a few suggestions for your next trip from Kopenhaga

In 2 hours, you can reach Malmö, Odense.

In 3 hours, you can reach Århus.

In 4 hours, you can reach Göteborg, Linköping.

In 5 hours, you can reach Hamburg, Aalborg.

In 6 hours, you can reach Sztokholm.

In 7 hours, you can reach Berlin, Uppsala.

In 8 hours, you can reach Oslo.

In 9 hours, you can reach Kolonia, Frankfurt nad Menem.

In 10+ hours, you can reach Paryż, Budapeszt, Warszawa, Wiedeń, Praga, Bruksela, Amsterdam, Bratysława, Zurych, Rotterdam...