You won't be making the same miles per hour in the Class A that you do in a car or pickup. If you're able to drive long distances, you can probably do 6 or 7 hundred miles a day, but boy, you'll be wore out when you get there.
One thing, you won't need to stop at an rv park or anywhere with a dump station or even water if you're going to do it in 2 or 3 days, so that will help on time.
We did a trip from Silverdale WA to San Antonio TX in 4 days one time in order to get home for a funeral, but I wouldn't want to do that again.
