Being from the midwest that was a concern I had when we did our five week adventure out west through MT OR CA NV UT NE and IA last August and September. We had no problems at all and a some of our trip was remote. Of course I have an in-bed forty five gallon transfer tank which made it easier to "plan" fuel stops. Love that extra tank!!!! I think there's more convenience style stores now days and a lot of those have diesel. I know the first time I biked out to the Black Hills years ago there weren't as many gas stations as there are now out that way. Just saying.
Dan