Begin high in the Swiss Alps, this fast moving river flows into the eastern end of Lake Geneva, then south through south-eastern France, emptying into the Mediterranean Sea.
Small branches run in all directions, and in overall length, it's (300 miles) (485 km).
Rising in northwestern Ireland, it flows south through a series of lakes, then turns west to eventually empty into the Atlantic Ocean. It's 230 miles (370 km) in length.
The Tagus River rises in the central highlands of Spain, flowing southwest across Portugal, then south to Lisbon and the Atlantic Ocean. It's 626 miles (1,007 km) in length.
The Volga is the largest river in European Russia in terms of length, discharge, and watershed. It flows through central Russia, and is widely viewed as the national river of Russia. It's 3,692 km (2,294 mi) long