In 2 hours, you can reach Dresden.
In 3 hours, you can reach Ústí nad Labem.
In 4 hours, you can reach Prague, Berlin, Most.
In 5 hours, you can reach Liberec, Nürnberg.
In 6 hours, you can reach Hamburg, Munich, Wrocław, Pilsen, Poznań, Frankfurt am Main, České Budějovice, Szczecin, Hradec Králové, Pardubice...
In 7 hours, you can reach Brno, Linz, Köln, Stuttgart, Olomouc, Strasbourg, Düsseldorf, Essen, Dortmund.