Distance between Sydney, Australia and Koidu, Sierra Leone
16688 km = 10370 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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Sydney, Australia
Country: AustraliaSydney’s coordinates: 33°52′04″ S, 151°12′26″ E
Population: 4,627,345
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Koidu, Sierra Leone
Country: Sierra LeoneKoidu’s coordinates: 8°38′37″ N, 10°58′17″ W
Population: 88,000
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Wikipedia article: Koidu
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