Distance between Niamey, Niger and Portsmouth, New Hampshire, USA
7610 km = 4729 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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Niamey, Niger
Country: NigerNiamey’s coordinates: 13°30′49″ N, 2°06′35″ E
Population: 774,235
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Portsmouth, USA
Country: USAState: New Hampshire
Portsmouth’s coordinates: 43°04′18″ N, 70°45′45″ W
Population: 20,779
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