Mongolia–Russia border
| Mongolia–Russia border | |
|---|---|
Border sign into Mongolia at the Russian side of the border | |
| Characteristics | |
| Entities | Russia Mongolia |
| Length | 3485 km |
| History | |
| Established | 1727 Treaty of Kyakhta (1727) |
| Current shape | 1924 Mongolian People's Republic |
| Treaties | Treaty of Saint Petersburg (1881), Treaty of Kyakhta (1915) |
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The Mongolia–Russia border is the international border between Mongolia and the Russian Federation. It runs from west to east between the two tripoints with China for 3485 km. The boundary is the third longest border between Russia and another country, behind the Kazakhstan–Russia border and the China–Russia border.