Distance between San Antonio, Texas, USA and Porto Velho, Brazil

5640 km = 3505 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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San Antonio, USA

Country: USA
State: Texas
San Antonio’s coordinates: 29°25′26″ N, 98°29′37″ W
Population: 1,327,407
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Wikipedia article: San Antonio

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Porto Velho, Brazil

Country: Brazil
Porto Velho’s coordinates: 8°45′42″ S, 63°54′14″ W
Population: 306,180
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Wikipedia article: Porto Velho

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