The longest rivers in Germany with the silent mapThe longest rivers in Germany are the Rhine, the Danube, the Elbe, the Weser, and the Oder.The Rhine is the longest and most important river in Germany, originating in Switzerland and flowing through Germany and the Netherlands before emptying into the North Sea. It is approximately 1,230 kilometers (765 miles) long.The Danube originates in Germany and flows through Austria and several other countries before emptying into the Black Sea. It is appr