The Yenisey River begins at the city of Kyzyl in the republic of Tyva (Tuva), Russia, at the confluence of its headstreams, the Great (Bolshoy) Yenisey and the Little (Maly) Yenisey, or Ka-Khem. The river runs for 2,167 miles (3,487 kilometres) on or near the border between eastern and western Siberia before emptying into the Kara Sea, a marginal sea of the Arctic Ocean.