EAAA operates a bus from Sofia to Katerini 4 times a day. Tickets cost $17 - $24 and the journey takes 6 h 28 min. 2 other operators also service this route. Alternatively, Greek Railways (OSE) operates a train from Sofia to Katerini 5 times a week. Tickets cost $24 - $35 and the journey takes 7 h 7 min. Greek Railways (OSE) also services this route every 2 hours.