Distance between Sofia, Bulgaria and Fort Collins, Colorado, USA
9416 km = 5851 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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Sofia, Bulgaria
Country: BulgariaSofia’s coordinates: 42°41′51″ N, 23°19′26″ E
Population: 1,152,556
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Fort Collins, USA
Country: USAState: Colorado
Fort Collins’ coordinates: 40°35′06″ N, 105°05′03″ W
Population: 143,986
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Wikipedia article: Fort Collins
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