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Which European river is longer than the Danube River?
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Danube River
The Danube River basin and its drainage network.
The Volga River is the only river in Europe that is longer than the Danube River. While the Danube flows for approximately 1,770 miles (2,850 km), the Volga is the continent's longest river, stretching about 2,193 miles (3,530 km) from its source in the Valdai Hills to the Caspian Sea.12