Here are a few suggestions for your next trip from Krakau

In 3 hours, you can reach Warschau, Ostrava.

In 4 hours, you can reach Łódź.

In 6 hours, you can reach Wien, Prag, Bratislava, Brünn.

In 7 hours, you can reach Berlin, Košice, Nitra.

In 8 hours, you can reach Linz.

In 9 hours, you can reach Budapest, Hamburg, Graz.

In 10+ hours, you can reach Rom, Paris, Bukarest, Stockholm, Brüssel, Amsterdam, Zagreb, Vilnius, Zürich, Laibach...