MiG-31BMs stationed in eastern Siberia’s Krasnoyarsk region have flown non-stop to southern Russia’s Astrakhan region in a seven hour four minutes flight.
By Konstantin Tyurpeko (http://russianplanes.net/id161326) [CC BY-SA 4.0 or CC BY-SA 4.0], via Wikimedia Commons
The 8,000 kilmometers journey required three air-to-air refuelings.