Distance between Barcelona, Spain and Boulder, Colorado, USA
8387 km = 5212 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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Barcelona, Spain
Country: SpainBarcelona’s coordinates: 41°23′19″ N, 2°09′32″ E
Population: 1,621,537
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Wikipedia article: Barcelona
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Boulder, USA
Country: USAState: Colorado
Boulder’s coordinates: 40°00′53″ N, 105°16′13″ W
Population: 97,385
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Wikipedia article: Boulder
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