What was the length of the eastern front in world war 2?

During World War II, the length of the Eastern Front, where Germany and its allies waged direct war against the Soviet Union from 1941 to 1945, varied greatly at each stage of the war. Initially, the front line stretched from the edge of the Baltic Sea in East Prussia to the Black Sea, approximately 700 miles. In the next year, the front stretched from Leningrad in the north to the Caucasus Mountains in the south -- over 1200 miles. (At the same time, Finland was waging war as an ally of Germany along its 700 mile-long border with the U.S.S.R.) The front line shortened gradually as Soviet troops advanced into eastern Europe in 1944 and 1945.