Sun City Summerlin (Las Vegas) to Westwood California...... 298 miles in light traffic with a 15 minute splash and go/leak stop in Barstow. 3 hours 9 minutes 54 seconds in a SUV! DL PS... My dear (tolerant) wife must have wanted to be home worse than I, since I didn't hear the dreaded SLOW DOWN one time!!! Alone or with a "fast friend" in the beast.... It is a 2- 2 1/2 hour drive tops.