If you go to Pilot/Flying J's website, they have an Excel document with all their locations. You can import all the locations with dedicated RV lanes into your Google maps or add them one by one as you wish to your favorites in whatever device you wish. This is especially helpful when you are pulling your toad as some locations are difficult to navigate at 45' plus.
Here is my map that you can access; RV Lanes only:
https://drive.google.com/open?id=15X...4I&usp=sharing