This guide describes the second part of the Danube Cycle route, a 1647km cycle ride following the lower part of the Danube from the Hungarian capital of Budapest through Hungary, Croatia, Serbia and Romania to the river's delta on the shores of the Black Sea.

The cycling is generally level with a few gentle gradients, mostly on quiet country roads or riverside flood dykes. The 32 stages vary from 30-96km, with some longer excursions and surfaces are mostly in good condition, suitable for hybrid or touring cycles.

Cycling infrastructure is generally good in Hungary, Croatia and Serbia. In Romania, where there is no waymarking and often long distances between places to sleep and eat, this guidebook gives a detailed route description, and maps for each stage at a cycle-friendly a scale of approximately 1:150,000. Off-route excursions enable short visits to be made to Bulgaria, Moldova, Ukraine and the Danube delta.