The Ural (, ) or Jayiq/Zhayyq ( , , ), known as Yaik before 1775, is a river flowing through Russia and Kazakhstan in Eurasia. It originates in the southern Ural Mountains and ends at the Caspian Sea. At , it is the third-longest river in Europe after the Volga and the Danube, and the 18th-longest river in Asia. The Ural River is conventionally considered the boundary between the continents of Europe and Asia.