Here's what I came up with. Living in Arizona makes it quite convenient to start at AZ/CA/NV and run counter-clockwise. Ending in WA/OR also makes it convenient for adding AK on the end if someone were game for that (which is one of my objectives in looking at this particular route).
Now, the discussion regarding Manley, MN is rather interesting as there's a gas station there but they aren't open 24/7 and have a SD address on their receipts (there's another thread on this
HERE). I found a Shell station in Hills, MN that I have pinned in my route. Of course, I don't know if it's open 24/7 or not.