Distance between Columbus, Ohio, USA and Sarnia, Canada
340 km = 211 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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Columbus, USA
Country: USAState: Ohio
Columbus’ coordinates: 39°57′40″ N, 82°59′55″ W
Population: 787,033
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Wikipedia article: Columbus
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Sarnia, Canada
Country: CanadaSarnia’s coordinates: 42°58′43″ N, 82°24′14″ W
Population: 82,998
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Wikipedia article: Sarnia
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