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Driving distance from Riverside, CA to Las Vegas, NV. The total driving distance from Riverside, CA to Las Vegas, NV is 238 miles or 383 kilometers. Your trip begins in Riverside, California. It ends in Las Vegas, Nevada.
From Las Vegas, NV - 275 miles/ 443 kilometers. 1  Drive north on I-15 for 128 miles/ 206 km, just past St. George, UT to Rt 9. 2  Drive east on Rt 9 for 10 miles/ 16 km to Rt 59. 3  Continue east on Rt 59 for 32 miles/ 51 km.  Continue east on Rt 389 for 33 miles/ 53 km to the junction with US 89a.