Distance between Incheon, South Korea and Yefremov, Tula Oblast, Russia

6692 km = 4158 miles

We assume a spherical Earth as a close approximation of the true shape of the Earth (an oblate spheroid). The distance is calculated as great-circle or orthodromic distance between city centres on the surface of a sphere.

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Incheon, South Korea

Country: South Korea
Incheon’s coordinates: 37°27′23″ N, 126°42′18″ E
Population: 2,628,000
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Wikipedia article: Incheon

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Yefremov, Russia

Country: Russia
Yefremov’s coordinates: 53°08′53″ N, 38°05′57″ E
Population: 45,497
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