Yeah, there are few routes you can choose from. There MIGHT have been a couple of "little rides" that have passed over this territory in the past couple of years.
I might suggest marking you map with gas stops and then linking those spots together to match you range. Google earth will give you lots of off-asphalt options if you can handle the remoteness.
"I don't know what you do, but I know what I do, and I don't do that." --Uncle Doug, R.I.P.
"Without the possibility of death, adventure is not possible"--Reinhold Messner