Distance between Perth, Australia and Castries, Saint Lucia
18013 km = 11193 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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Castries, Saint Lucia
Country: Saint LuciaCastries’ coordinates: 13°59′44″ N, 61°00′22″ W
Population: 20,000
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Wikipedia article: Castries
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