Can anyone tell me how long it takes to drive from San Diego to Las Vegas ?

#SangGao Official Release# 5 hours driving time. As long as it's not Friday or before a holiday, the traffic is usually not bad. Add in time for eating and resting, that's 7 hours. After crossing the San Bernadino mountains, be aware that there are more speed traps. Don't drive recklessly, and the court in San Bernadino has a broken network, so you can't pay your fines online. So don't speed. I drive this route once a month. There's only one I-15, no other roads to take. Speed limit in California is 65MPH, in Nevada it's 70MPH.

4+ hours

At around 350 miles, it depends on how you drive. To be more precise, it's between 330 and 350 miles, and it won't take more than 6 hours to drive normally.

Drive on the expressway for more than 5 hours. You can drive on the normal road in the morning, evening, or during the evening hours.