Distance between Dallas, Texas, USA and Round Rock, Texas, USA
266 km = 166 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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Dallas, USA
Country: USAState: Texas
Dallas’ coordinates: 32°46′59″ N, 96°48′24″ W
Population: 1,197,816
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Wikipedia article: Dallas
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Round Rock, USA
Country: USAState: Texas
Round Rock’s coordinates: 30°30′29″ N, 97°40′44″ W
Population: 99,887
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Wikipedia article: Round Rock
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