Distance between Sydney, Australia and Sliven, Bulgaria
15209 km = 9450 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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Wikipedia article: Sydney
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Sliven, Bulgaria
Country: BulgariaSliven’s coordinates: 42°41′08″ N, 26°19′45″ E
Population: 96,368
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Wikipedia article: Sliven
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