Distance between Columbia, Maryland, USA and Duisburg, Germany
6317 km = 3925 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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Columbia, USA
Country: USAState: Maryland
Columbia’s coordinates: 39°14′25″ N, 76°50′21″ W
Population: 99,615
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Duisburg, Germany
Country: GermanyDuisburg’s coordinates: 51°25′56″ N, 6°45′54″ E
Population: 504,358
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