Google users are really curious about where in the world Las Vegas is in comparison to other attractions. So you want to check out the Hoover Dam? It’s a much shorter trip than heading to the Grand Canyon, since Hoover Dam is only about 30 miles away from Sin City. According to Google Maps, the drive will take 41 minutes via I-515 S and US-93 S. Take the scenic lake route via East Lake Mead Blvd. and Lakeshore Road, and the trip will last about 1 hour and 1 minute.