Distance between Haiphong, Vietnam and Ponca City, Oklahoma, USA

13159 km = 8177 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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Haiphong, Vietnam

Country: Vietnam
Haiphong’s coordinates: 20°51′53″ N, 106°41′00″ E
Population: 602,695
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Wikipedia article: Haiphong

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Ponca City, USA

Country: USA
State: Oklahoma
Ponca City’s coordinates: 36°42′25″ N, 97°05′08″ W
Population: 25,387
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Wikipedia article: Ponca City

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