Here are a few suggestions for your next trip from Karlovac

In 2 hours, you can reach Zagabria.

In 4 hours, you can reach Lubiana, Maribor, Fiume.

In 5 hours, you can reach Graz, Kranj.

In 7 hours, you can reach Spalato, Osijek.

In 8 hours, you can reach Budapest, Vienna.

In 9 hours, you can reach Bratislava, Linz.

In 10+ hours, you can reach Berlino, Roma, Parigi, Bucarest, Varsavia, Stoccolma, Praga, Bruxelles, Amsterdam, Zurigo...