Distance between Seattle, Washington, USA and Adelaide, Australia
13432 km = 8346 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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Seattle, USA
Country: USAState: Washington
Seattle’s coordinates: 47°36′22″ N, 122°19′55″ W
Population: 608,660
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Wikipedia article: Seattle
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Adelaide, Australia
Country: AustraliaAdelaide’s coordinates: 34°55′43″ S, 138°35′55″ E
Population: 1,225,235
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Wikipedia article: Adelaide
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