Travel by car: the driving distance from Helsingor in Denmark and Mostar is 2000 km which equals a travelling time of approximately 20 hours under normal circumstances. The recommended route goes through Germany where the highway is free of charge while in Austria, Slovenia and Croatia toll fees apply.
Alternative ways of travelling between Helsingor and Mostar:
Travel by train: it is possible to travel by train on this route. There are two options: it is possible to travel through Germany, Austria and Hungary or through Germany, Czech Republic and Hungary. More informations about trains in Bosnia and Herzegovina you can check here.
Travel by plane: there are no direct flights on this route.
Map with buses from Mostar: