Randall and McNally road atlas could easily fit into a large pack. Granted it's no detailed topo map but it would suffice. I think I would try to raid a museum or antique engine club and look for steam powered transport or some kind. Hot air balloons would also be unaffected, though not exactly ideal transport with a specific location in mind, kind of a where the winds may take me vehicle. Would a faraday cage protect against such a large EMP? If so a couple dirt bikes stored in one could prove invaluable, or better yet an ultra-light or para-plane.
The hordes of starving and frightened people would more than likely be looking for help of some kind leading them from city to city. You're gonna bump into people if you're on the move it's unavoidable. It would help to appear one of two ways. Either look like you're staving, sick, or crazy and have nothing to offer, or go "road warrior" wearing bones, and carrying a large visible weapon and wearing someone else's face for a mask. Use their fear to your advantage. Make no mistake, the more frightened you are the quicker you'll expire. Only the true wild men/women would seek the wilderness knowing it has everything needed to keep you alive. The current cultural view is that that the woods are scary, unpredictable and dangerous. The TV makes it seem nearly impossible for even a well versed woodsman/woman to stay alive. I have to giggle when I see a survival expert eating bugs and drinking is own urine on TV, just to boost ratings. No one would watch if every third plant come across was edible and contained enough water to keep from dehydrating. I have 3 or 4 plant and mushroom ID books that never leave my backpack(after years of practice they're mostly memorized though). Travelling over a distance there will be places with food and places without. Binge eat when near food and rely on what you can carry when you're not.
The key to survival in such a situation is being mobile and extremely resourceful. If you have a doomsday stash of supplies in a bunker you've pretty much cursed yourself. You've chained yourself to a giant target that you now depend on for survival. Learn to make tools and forage food, knowledge is power. That way if you do come in contact with pillaging hoards, you're far more valuable to them alive than what they can loot off your corpse. Provided of course it takes more than a couple months for cannibalism to become popular.
Where are we all gonna meet up when this happens anyway? You guys are certainly a step ahead in this game and are most welcome in my camp for sure.