Distance between Sofia, Bulgaria and Obninsk, Kaluga Oblast, Russia

1682 km = 1045 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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Obninsk, Russia

Country: Russia
Obninsk’s coordinates: 55°05′48″ N, 36°36′36″ E
Population: 107,392
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Wikipedia article: Obninsk

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