Distance between Philadelphia, Pennsylvania, USA and Lake Forest, Illinois, USA
1093 km = 679 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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Philadelphia, USA
Country: USAState: Pennsylvania
Philadelphia’s coordinates: 39°57′08″ N, 75°09′49″ W
Population: 1,526,006
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Lake Forest, USA
Country: USAState: Illinois
Lake Forest’s coordinates: 42°15′31″ N, 87°50′26″ W
Population: 19,375
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