I am in the early (very early) trip planning stage for a 4-week trip in July of 2019 that would go from Southern California to Crater Lake, though Idaho with a stop near Sun Valley, on to Yellowstone and Grand Teton. Then back to Southern California via Las Vegas for a few days. We would be staying at each of these places for three to five full days each. There probably will be a couple of 2-day drives that would entail staying at a motel. I obviously cannot take 4 weeks’ worth of food, and for anyone that has done an extended trip, I was curious about managing/procuring food along the way. I would have the first 5 days food on board; this would take care of the first stop in Crater Lake. After that… I am thinking a shopping list for each leg of the trip, and finding a local supermarket along the road between camping stops to re-supply.