Distance between Chicago, Illinois, USA and Ulan Bator, Mongolia
9944 km = 6179 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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Chicago, USA
Country: USAState: Illinois
Chicago’s coordinates: 41°51′00″ N, 87°39′00″ W
Population: 2,695,598
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Wikipedia article: Chicago
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Ulan Bator, Mongolia
Country: MongoliaUlan Bator’s coordinates: 47°54′27″ N, 106°52′59″ E
Population: 844,818
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Wikipedia article: Ulan Bator
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