Distance between Ulan Bator, Mongolia and Worcester, Massachusetts, USA
9999 km = 6213 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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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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Worcester, USA
Country: USAState: Massachusetts
Worcester’s coordinates: 42°15′45″ N, 71°48′08″ W
Population: 181,045
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Wikipedia article: Worcester
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