Distance between Rio de Janeiro, Brazil and San Luis, Argentina
2541 km = 1579 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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Rio de Janeiro, Brazil
Country: BrazilRio de Janeiro’s coordinates: 22°54′10″ S, 43°12′27″ W
Population: 6,023,699
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Wikipedia article: Rio de Janeiro
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San Luis, Argentina
Country: ArgentinaSan Luis’ coordinates: 33°17′42″ S, 66°20′08″ W
Population: 183,982
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Wikipedia article: San Luis
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