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Why is the Volga River considered the longest river in Europe?
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Volga River
The Dnieper, Don, and Volga river basins and their drainage network.
The Volga River is considered the longest river in Europe because it spans approximately 2,193 miles (3,530 kilometers) from its source in the Valdai Hills to its mouth at the Caspian Sea. This distance exceeds that of any other river on the European continent.1