How many miles have you towed in one day?

I might have the record. One very long day I flew from Calgary AB to Knoxville TN where I picked up a new truck. After purchasing the truck I went out for a very late supper before driving all night to Paris Tx where I installed a B&W hitch in my truck. Immediately after finishing the install, which I did in a Napa parking lot I headed down to Emory to pick up two gooseneck trailers stacked piggy back, one on top the other. From there I drove all the way to Des Moines Iowa. In Des Moines I picked up a third trailer which was stacked on top the two goosenecks and ended up spending a good part of the morning at the Ford dealership having my truck checked out for a noisey turbo. I then headed on to Mitchel SD where I got a room for the night. So the first day was a long one....I got up at 5.00 am to catch my flight and hit the pillow at 11.00 pm with just shy of 2000 miles on the truck......66 hours later. The next day I drove the remaining 1100 miles home....on day two I did a bit of shopping while I had a paintless dent removal place remove numerous dents in my truck after driving through a hail storm. As well on day two I spent hours at the border importing the truck from the US into Canada....I think day two was nearly 40 hours long. My neighbors are a husband and wife tag team that drive from north of Calgary AB all the way down to Miami Florida and back every week. I believe it is 6000 miles in 6 days....they spend a day at home before doing it all over again.