EuroVelo 6 (EV6), named the "Rivers Route", is a EuroVelo long-distance cycling route that runs along 3653 kilometers some of Europe's major rivers, including much of the Loire, some of the Saône, a short section of the upper Rhine and almost the entire length of Europe’s second longest river, the Danube &mdash; from the Atlantic coast of France to the city of Constanța on the Black Sea.