Distance between Monterrey, Mexico and Helena, Alabama, USA
1555 km = 966 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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Monterrey, Mexico
Country: MexicoMonterrey’s coordinates: 25°40′30″ N, 100°19′06″ W
Population: 1,122,874
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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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