Distance between Sofia, Bulgaria and Riano, Italy
891 km = 553 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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Riano, Italy
Country: ItalyRiano’s coordinates: 42°05′36″ N, 12°30′52″ E
Population: 6,784
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Wikipedia article: Riano
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