Distance between Yerevan, Armenia and Boulder, Colorado, USA
10599 km = 6586 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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Yerevan, Armenia
Country: ArmeniaYerevan’s coordinates: 40°10′51″ N, 44°30′48″ E
Population: 1,093,485
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Wikipedia article: Yerevan
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Boulder, USA
Country: USAState: Colorado
Boulder’s coordinates: 40°00′53″ N, 105°16′13″ W
Population: 97,385
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Wikipedia article: Boulder
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