Distance between Seoul, South Korea and Allentown, Pennsylvania, USA
11039 km = 6859 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 KoreaSeoul’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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Allentown, USA
Country: USAState: Pennsylvania
Allentown’s coordinates: 40°36′30″ N, 75°29′24″ W
Population: 118,032
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Wikipedia article: Allentown
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