Here are a few suggestions for your next trip from Gramada
In 2 hours, you can reach Jasenovik, Podvis, Svrljig, Svrljiski Miljkovac, Minicevo, Crveni Krst, Hadzicevo, Pantelej, Palilula, Matejevac...
In 3 hours, you can reach Timok, Zajecar, Grljan.
Book - Trainline
Book - SNCF Connect
Book - Deutsche Bahn