Distance between Seoul, South Korea and Nakhon Phanom, Thailand

3120 km = 1939 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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Seoul, South Korea

Country: South Korea
Seoul’s coordinates: 37°33′57″ N, 126°58′42″ E
Population: 10,349,312
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Wikipedia article: Seoul

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Nakhon Phanom, Thailand

Country: Thailand
Nakhon Phanom’s coordinates: 17°24′38″ N, 104°46′42″ E
Population: 34,595
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