Once again I find an opportunity to recommend Pioneer Fuel. There are plenty of Pacific Pride (and perhaps other outlets these days) with which Pioneer is affiliated scattered across the West, and especially Oregon and Washington. After going dead half way up a hill between Bandon and Coos Bay 15 years ago in our old Pace Arrow (because I thought I had a quarter tank but the hill changed all that), I was so embarrassed that I made it a point afterwards to look for fuel at half a tank or thereabouts.
I find it pretty difficult to get 200-300 miles from a Pacific Pride facility in Oregon, and they are almost always easy in, easy out, and the bulk of the time I'm the only machine of any kind in the station. When fuel may be reaching the half tank mark the next travel day, the night before I try to check their website for appropriate locations; it usually gives some description of the locale's orientation, access, and directions, so I know what I'm getting into well ahead of time. Pacific Pride used to issue an annual book of their locations, but during the recession there was such a surge of suppliers closing down, that the listings were all too often inaccurate. So I'm not certain they still publish that guide; more likely not now because so many new suppliers come on line so regularly that an annual book coudn't keep up anyway.
Their prices may not be posted at the pumps, but I've always found them competitive ultimately, so I quit fretting about that aspect; easy in, easy out was most important. They used to charge credit accounts, but a few years back they changed to an automatic first of the month withdrawal of whatever the previous month's cost was from our checking account. Since I record my fill-ups in a log, I can estimate what that amount will be and manage for it.
I've often filled up at Pacific Pride along the coast, and recall feeling secure from passing them often along 101.
Joel