Distance between Hanoi, Vietnam and Lanzhou, China
1685 km = 1047 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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Lanzhou, China
Country: ChinaLanzhou’s coordinates: 36°03′25″ N, 103°50′23″ E
Population: 2,628,426
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Wikipedia article: Lanzhou
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