Distance between Perth, Australia and Baltimore, Maryland, USA
18646 km = 11586 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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Baltimore, USA
Country: USAState: Maryland
Baltimore’s coordinates: 39°17′25″ N, 76°36′43″ W
Population: 620,961
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Wikipedia article: Baltimore
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