Distance between Decatur, Illinois, USA and Ulan Bator, Mongolia
10145 km = 6304 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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Decatur, USA
Country: USAState: Illinois
Decatur’s coordinates: 39°50′25″ N, 88°57′17″ W
Population: 76,122
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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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