Distance between San Juan, Puerto Rico and Rockford, Illinois, USA
3426 km = 2129 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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San Juan, Puerto Rico
Country: Puerto RicoSan Juan’s coordinates: 18°27′58″ N, 66°06′20″ W
Population: 418,140
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Wikipedia article: San Juan
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Rockford, USA
Country: USAState: Illinois
Rockford’s coordinates: 42°16′16″ N, 89°05′38″ W
Population: 152,871
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Wikipedia article: Rockford
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