Cheap Bus tickets to Zonguldak

What are the most popular routes to Zonguldak?

Istanbul Europe - ZonguldakAverage price$28Average duration7hDaily departures25
Istanbul Asia - ZonguldakAverage price$28Average duration5h 25mDaily departures14
Bartın - ZonguldakAverage price$7Average duration2hDaily departures4
Gebze - ZonguldakAverage price$25Average duration4h 40mDaily departures9
Bolu - ZonguldakAverage price$20Average duration3h 15mDaily departures1