I have done the drive 3 times and it depends the time and how much you like to drive. It was about 5 days when driving in 8 hour spurts. Stayed in hotels and stretched when we needed. Depending on route it could be a really nice trip or boring trip. Do you like mountain driving? When are you going because right now snow in the mountains are fucking terrible. You will need chains and not a guarantee that the passes are open.