Distance between Surabaya, Indonesia and Birsk, Republic of Bashkortostan, Russia
8728 km = 5423 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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Surabaya, Indonesia
Country: IndonesiaSurabaya’s coordinates: 7°14′57″ S, 112°45′02″ E
Population: 2,374,658
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Birsk, Russia
Country: RussiaBirsk’s coordinates: 55°25′15″ N, 55°32′34″ E
Population: 41,014
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