The average bus between Istanbul and Bolu takes 7h 13m and the fastest bus takes 6h. The bus service runs several times per day from Istanbul to Bolu. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run every 4 hours between Istanbul and Bolu. The earliest departure is at 2:00 AM at night, and the last departure from Istanbul is at 9:00 PM which arrives into Bolu at 3:00 AM. All services require a transfer, and take on average 7h 13m. The schedules shown below are for the next available departures.

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6h 30m • 1 changeWant to know about travelling from Istanbul to Bolu? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Istanbul to Bolu. However, there are services departing from Istanbul station and arriving at Bolu station via Bolu. The journey, including transfers, takes approximately 7h 13m.
Istanbul to Bolu bus services, operated by Kale Seyahat, depart from İstanbul Dudullu station.
Istanbul to Bolu bus services, operated by Kale Seyahat, arrive at Bolu station.
Book your Istanbul to Bolu bus tickets online with Kale Seyahat, Varan Turizm and 4 other operators.
The distance between Istanbul and Bolu is 225.5 km. The road distance is 282 km.
Kale Seyahat operates a bus from İstanbul Dudullu to Bolu 3 times a day, and the journey takes 3h 15m. Four other operators also service this route.