We also recommend bus connections that take you either direct to Ustronie Morskie or to Kołobrzeg which is 12 kilometres away. There are direct connections from Poznań and Piła to Ustronie Morskie, among other places, from PKS Poznań (www.pks.poznan.pl).
We can recommend Polski Express and Komfort Bus. With these operators you can reach Kołobrzeg and other destinations from Warsaw, Płock, Włocławek, Bydgoszcz and Piła. More details and exact timetables can be found on the following websites: www.polskiexpress.pl, www.pks.bydgoszcz.pl