Distance between Busan, South Korea and Boulder, Colorado, USA
9992 km = 6209 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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Busan, South Korea
Country: South KoreaBusan’s coordinates: 35°06′10″ N, 129°02′25″ E
Population: 3,678,555
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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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