Distance between Cologne, Germany and Lake Forest, Illinois, USA

6802 km = 4227 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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Cologne, Germany

Country: Germany
Cologne’s coordinates: 50°55′59″ N, 6°57′00″ E
Population: 963,395
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Wikipedia article: Cologne

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Lake Forest, USA

Country: USA
State: Illinois
Lake Forest’s coordinates: 42°15′31″ N, 87°50′26″ W
Population: 19,375
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Wikipedia article: Lake Forest

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