Route starting from Zemun takes you to Banstol. After Banstol you may expect curvy road up to Iriski Venac (lots of caffe and sightseeing things up there). From Iriski Venac you take the road down to Zmajevac (close to Novi Sad). After Zmajevac road takes you uphill again to Fruska gora and ends at Vrdnik (lots of sightseeing thing up there).
Nice route starting from Belgrade, take the highway to Smederevo, after that expect local roads to Golubac fortress.After Golubac expect best curvy roads in this part of Eastern Serbia. Road takes us to Kladovo, also visit a nice place called Kapetan Misin Breg while you ride.Road surface is good but some parts of the road excersice caution and are not so good.
Nice curvy road that ends at perfect resturant called Kota 555. Biker friendly place very good meals. Local road will take you to Ralja, after that Topola and through sceenic road to the top of mountain Rudnik.
Great sceenic route, many curves. Road is good and the nature is great!
Great sceenic route in mountains, fresh new tarmac with lots of curves. Usually no cops but not always. In Sjenica there is an option to visit national par Uvac.