Interesting ride over rolling hills of Belgrade's suburbs. Started along the Sava's levee on double track, passed through the industrial Obrenovac in order to reach hilly villages of Jasenak and Vranić. On few occasions I ended up on muddy field roads, which would be real treat in summer time. One of them flipped me over so I ended in the mudd.
While riding along the Ada Ciganlija lake, I stopped and washed the bike and myself in the lake.
If you wander how I got to Progar, I'll tell you the secret. Pick the local transit bus from your place to the farthest location that you want to go. I enter at the first station and exit at the last. Officially we are not allowed with bikes on the bus but drivers never complain. In the middle of the bus there is a place for strollers and wheelchair where you can squeeze your bike. Be respectful and you won't have problems. Always go to the last station so you don't bother other people.
Happy trails.