Distance between Cologne, Germany and Altai, Mongolia
6172 km = 3835 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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Wikipedia article: Cologne
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Altai, Mongolia
Country: MongoliaAltai’s coordinates: 46°22′19″ N, 96°15′29″ E
Population: 15,800
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Wikipedia article: Altai
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