Distance between Sofia, Bulgaria and Il'ka, Republic of Buryatia, Russia

6147 km = 3819 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: Bulgaria
Sofia’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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Il'ka, Russia

Country: Russia
Il'ka’s coordinates: 51°43′16″ N, 108°31′18″ E
Population: 2,100
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Wikipedia article: Il'ka

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