We spent two days cycling across Northern Croatia, close to the Hungarian border. They were very hot days and most of the distance covered was over almost totally flat countryside. It was all on ordinary roads, and they all had an excellent surface. Even the main roads were not particularly busy, so cycling along was not difficult. But it could be boring, just trudging along through vast fields of corn or sunflowers or (occasionally) tobacco.
Each day had a particular feature that belied boredom. On the first day, we stopped at a bus shelter for a snack, when a woman invited us to look round a wildlife and conservation centre next door. It was about conservation areas by the river Drava, which is slow flowing and has a considerable flood plain. A sideline was that they look after wounded storks who had fallen out of their nests when too young to fly.
We stayed in an appartment on Domji Miholac after the first day. The next day, crossing the Drava was impressive. But the feature to remember was an exhibition in a little village church about the expulsion of German people after the 2nd world war. They just were kicked out with only a suitcase each.
Later that day we had to cross some hills before crossing the Danube. We started on the wrong road that took us to a hillside shrine. On the right road police waved us aside and a peloton of a bike race shot by in the opposite direction. The descent to the Danube was disappointingly cobbled; no going fast!
Crossing the Danube took us into Serbia. Passport checks and a HUGE river.