Distance between Porto Alegre, Brazil and Kaifeng, China

18580 km = 11545 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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Porto Alegre, Brazil

Country: Brazil
Porto Alegre’s coordinates: 30°01′59″ S, 51°13′47″ W
Population: 1,372,741
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Wikipedia article: Porto Alegre

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Kaifeng, China

Country: China
Kaifeng’s coordinates: 34°47′54″ N, 114°18′26″ E
Population: 900,000
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Wikipedia article: Kaifeng

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