Distance between Perth, Australia and Opelika, Alabama, USA
18041 km = 11210 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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Perth, Australia
Country: AustraliaPerth’s coordinates: 31°57′08″ S, 115°51′41″ E
Population: 1,896,548
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Wikipedia article: Perth
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Opelika, USA
Country: USAState: Alabama
Opelika’s coordinates: 32°38′43″ N, 85°22′41″ W
Population: 26,477
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Wikipedia article: Opelika
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