Distance between Singapore, Singapore and Napa, California, USA
13580 km = 8438 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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Singapore, Singapore
Country: SingaporeSingapore’s coordinates: 1°17′22″ N, 103°51′00″ E
Population: 3,547,809
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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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