Distance between Sofia, Bulgaria and Vienna, Austria
819 km = 509 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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Sofia, Bulgaria
Country: BulgariaSofia’s coordinates: 42°41′51″ N, 23°19′26″ E
Population: 1,152,556
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Wikipedia article: Sofia
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Vienna, Austria
Country: AustriaVienna’s coordinates: 48°12′30″ N, 16°22′19″ E
Population: 1,691,468
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Wikipedia article: Vienna
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