According to the Interfax news agency, the four bombers refueled twice during the flight, performing air-to-air refueling in pairs.
The twin-engine, twin-seat warplanes together covered a combined distance of more than 50,000 kilometers in three days. Each Su-34 spent about 20 hours in flight.
The Su-34s—Moscow’s newest strike planes—aren’t the only Russian jets to have operated in the Arctic lately. MiG-31 interceptors have flown as far north as the 82nd parallel, demonstrating their ability to chase down targets around the North Pole.
Russian air force colonel-general Viktor Bondarev told ITAR-TASS that the air arm is preparing to send the MiG-31s even farther north during future exercises.