Distance between Cairo, Egypt and Lanzhou, China
6648 km = 4131 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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Cairo, Egypt
Country: EgyptCairo’s coordinates: 30°03′45″ N, 31°14′58″ E
Population: 7,734,614
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Wikipedia article: Cairo
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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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