interesting question.
drove from Essen (Germany) to Valencia (Spain) on a 190D merc. Distance traveled was 1988 km (as far as i can recall) and the only stops were when we had to get the tank full of the car and empty our own tanks. Traveled twice on the same route. Time taken for first time was 28 hours. Second time it took 24 hours on a 2007 Ford (dont remember now which ford lol)
drove nonstop from Florence, Italy to Paris, France stopping only for fuel. Forgot the distance and time taken now.
In Pakistan, driving 800-900kms in one go is a routine.
I dont like to stop for longer intervals on long routes. get a coke can, fuel and go