[Bob Broberg SPF667 460BB]

Dan, we try to schedule stops about every hour for both fuel and bladder reasons. For example, on the Laughlin trip we will meet in Wickenburg then stop in Wikieup for fuel/bladder then Kingman to eat and finally Laughlin. Each stop is about an hour apart.
The longest distance between stops is 75 miles so you would only need a 10 gallon tank and a fat wallet.
AZ Bob