Russian Mountains is a term used to refer to the mountain ranges located in Russia. The three most prominent mountain ranges are the Ural Mountains, the Altai Mountains, and the Urals. The Ural Mountains are a mountain range that stretches from the Arctic Ocean to the Ural River in western Russia. The Altai Mountains are a mountain range located in southern Siberia, near the border of Mongolia and Kazakhstan. The Urals are a mountain range that runs from the Arctic Ocean to the Ural River in western Russia. All three mountain ranges are part of the larger system of mountain ranges known as the Russian Mountains.