Distance between Chengdu, China and Napa, California, USA
10978 km = 6821 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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Chengdu, China
Country: ChinaChengdu’s coordinates: 30°40′00″ N, 104°04′00″ E
Population: 7,415,590
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Wikipedia article: Chengdu
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Napa, USA
Country: USAState: California
Napa’s coordinates: 38°17′49″ N, 122°17′07″ W
Population: 76,915
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Wikipedia article: Napa
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