I did a 1000 mile day in my 1991 Hunter RRC coming back from upstate New York to Atlanta many years ago - a big snowstorm chased all the way to the middle of Virginia until we outran it. But the most comfortable long distance Rover was my 2017 TDV6 Discovery 5 - and it would get over 600 miles on one tank of fuel. A couple of 600-700 mile days back to back was no problem in that Land Rover. The picture of the D5 is on the Tail of the Dragon in Tennessee.