Distance between Brazzaville, Congo and Boulder, Colorado, USA
12897 km = 8014 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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Brazzaville, Congo
Country: CongoBrazzaville’s coordinates: 4°15′58″ S, 15°16′59″ E
Population: 1,284,609
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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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