Buses from Istanbul to Zonguldak call at town's otogar (bus station). Otogar is about 2 km east of town centre but your bus company provides free shuttle minibuses that will take you to downtown. Bus ride takes about three and a half hours from Istanbul.
The town is connected to main Turkish highway system by a quite winding road to Düzce, where it joins the motorway O-4/E80 and highway D100, both of which connect Istanbul and Ankara, two largest cities of Turkey. From both Istanbul and Ankara, it takes more or less around 3 hours to get to Düzce, which is a further half hour away from Akçakoca.
A public bus line connects downtown (çarşı) to the bus station (otogar) with a de-tour through the old town.
(+90) 380 is town's telephone code.