The longest distance I have ever driven by myself was from Birmingham to Baltimore, MD. I actually got there in about 10.5 hours. I only stopped twice. Once for gas and restroom and the other for just the restroom. The longest drive I have ever been on was helping my g/f (now wife) drive from Los Angeles, CA back to Birmingham, AL. We started at about 9:30am CDT Saturday, stayed in a small town in Texas. I can't remember the name but I know it was right when you got to the Central Time Zone line. Then that Sunday morning we started about 8am and we pulled into her driveway at 1am CDT Monday morning.