Travel by car: the driving distance between Berlin and Mostar is around 1570 km which equals a travelling time of approximately 14 hours and 30 minutes. Recommended route goes via highway in Croatia, Slovenia, Austria and Germany. On this route toll fee apply except for Germany where the highway is free of charge.
Alternative ways of travelling from Berlin to Mostar:
Travel by train: it is possible to travel by bus on this route; the route goes via Munich and Zagreb where you change trains towards Sarajevo and Mostar. It is also possible to go via Budapest in Hungary. Travelling by train from Berlin to Mostar is much slower than travelling by bus or car, as trains in Bosnia and Herzegovina and Croatia are very slow. More info on trains in Bosnia and Herzegovina can be found here.
Travel by plane: there are no direct flights on this route.
Map with buses from Mostar: