Distance between Cologne, Germany and Niamey, Niger
4188 km = 2603 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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Cologne, Germany
Country: GermanyCologne’s coordinates: 50°55′59″ N, 6°57′00″ E
Population: 963,395
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Niamey, Niger
Country: NigerNiamey’s coordinates: 13°30′49″ N, 2°06′35″ E
Population: 774,235
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