Distance between Cologne, Germany and Kościan, Poland
684 km = 425 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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Cologne, Germany
Country: GermanyCologne’s coordinates: 50°55′59″ N, 6°57′00″ E
Population: 963,395
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Kościan, Poland
Country: PolandKościan’s coordinates: 52°05′17″ N, 16°38′55″ E
Population: 24,096
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