I agree the mobs will be bad. I've done enough hiking in the foothills to spot out some temporary geocache spots in case things fall apart.
Obviously if something like an EMP went off over night while I was sleeping that wouldn't really work out for me but if I had a feeling stuff was heading downhill in a few weeks I'd take advantage of a geocache. I mean think about it, people can only carry so much ammo and supplies with them at a time. If you can spread those supplies in geocaches or burried on a path to your general area you'll be evacuating you'll be better off.
I'd rely on a vehicle to get to a certain point, either I run out of gas or room on the road or just not safe to drive and rely more on walking on foot or bicycle.