Distance between Patna, India and Kaifeng, China
2975 km = 1848 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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Patna, India
Country: IndiaPatna’s coordinates: 25°35′38″ N, 85°08′08″ E
Population: 1,599,920
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Kaifeng, China
Country: ChinaKaifeng’s coordinates: 34°47′54″ N, 114°18′26″ E
Population: 900,000
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