I've done at least a dozen unofficial ( I don't need no stinkin' paper) on both my bikes and scooters. I just finished four within a three week period, out to Iowa and back again followed two weeks later going to Alabama and back(rain all the way home). I stop every 140-170 miles for fuel, before running too low, and take not more than about a five minute walkabout to stretch, clear the head, re focus, grab a snack or drink, and pee-not necessarily in that order. If you find yourself getting tired or sleepy, STOP. Nothing, but NOTHING is worth risking a crash.