Voronezh is a city and the administrative center of Voronezh Oblast, Russia, located on both sides of the Voronezh River, 12 kilometers from where it flows into the Don. It is an operating center of the Southeastern Railway which connects European Russia with the Urals and Siberia, as well as the Caucasus and Ukraine). It is also the center of the M4 highway. Population: 1,014,610; 889,680.