Distance between Hanoi, Vietnam and Oklahoma City, Oklahoma, USA
13283 km = 8254 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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Hanoi, Vietnam
Country: VietnamHanoi’s coordinates: 21°01′28″ N, 105°50′28″ E
Population: 1,431,270
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Wikipedia article: Hanoi
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Oklahoma City, USA
Country: USAState: Oklahoma
Oklahoma City’s coordinates: 35°28′03″ N, 97°30′59″ W
Population: 579,999
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Wikipedia article: Oklahoma City
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