Distance between Nanjing, China and Columbia, Maryland, USA
11938 km = 7418 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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Nanjing, China
Country: ChinaNanjing’s coordinates: 32°03′42″ N, 118°46′40″ E
Population: 7,165,292
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Wikipedia article: Nanjing
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Columbia, USA
Country: USAState: Maryland
Columbia’s coordinates: 39°14′25″ N, 76°50′21″ W
Population: 99,615
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Wikipedia article: Columbia
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