You may want to look at my Statewide Motorized Trail System (SMTS) for Nevada. You can find it on GPSXchange.com
I have every lonley stand along gas source I have found on it. Some you need to call ahead and I have phone numbers for each.
I also have GPS tracks of dirt roads and trails between each gas. In Nevada you have to plan your trip gas to gas if you have 130-150 mi range Dual Sport bike.