Distance between Ottawa, Canada and Udon Thani, Thailand

13042 km = 8104 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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Ottawa, Canada

Country: Canada
Ottawa’s coordinates: 45°24′40″ N, 75°41′53″ W
Population: 812,129
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Wikipedia article: Ottawa

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Udon Thani, Thailand

Country: Thailand
Udon Thani’s coordinates: 17°24′56″ N, 102°47′09″ E
Population: 247,231
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Wikipedia article: Udon Thani

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