Kraków-Przemysl, Poznan-Olsztyn, Poznan-Warsaw and Bydgoszcz-Warsaw. Since June 2009 there are more interREGIO trains on routes; most of them are available through the whole week, some of them only on weekends. More routes were introduced, some of which are especially made for students, like Kielce-Czestochowa-Wroclaw.

InterREGIO in Poland