Distance between Yaoundé, Cameroon and Helena, Alabama, USA
10557 km = 6560 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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Yaoundé, Cameroon
Country: CameroonYaoundé’s coordinates: 3°52′00″ N, 11°31′00″ E
Population: 1,299,369
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Helena, USA
Country: USAState: Alabama
Helena’s coordinates: 33°17′46″ N, 86°50′36″ W
Population: 16,793
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Wikipedia article: Helena
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