Mark,

refueling adds an hour
to your trip and the break to stretch your legs helps prevent fatigue on
really long trips.


IF there is an airfield with fuel along the route. Which often isn't the
case.

Also, consider an airplane with 4 or even 6 fuel tanks, not at all
uncommon. Leaving, say, 5 gallons sloshing around in each robs you of 25
gallons of fuel - which is at least 1.5 hours flying time. That is quite a
lot. In fact, it could be considered a really good reserve. Except for
that, you'd want it all in one tank.

--
Thomas Borchert (EDDH)