The Ural is a river whose name begins with the letter U. It is located in Europe and is the third longest river in Europe. It runs through Kazakhstan and Russia. The length of the Urals is 2,428 kilometers. Originally the river was called Jaik. It has its outlet in the Caspian Sea.
Uruguay is a river with the letter U. It is located in South America and lies in Uruguay, Brazil and Argentina. Its length is 2200 kilometers. Uruguay's mouth is the Atlantic Ocean. The source of the river is in the Serra do Mar mountain range, quite close to the Ocean.