Most major routes out of major cities will be very dangerous places to be in the event of a massive involuntary urban exodus. Imagine the situation WTSHTF in small towns on either side of the Snoqualmie Pass in Washington, or near I-80 across the Donner Pass in California, or on the Columbia River Gorge (dividing Oregon and Washington), or virtually every other stretch of interstate freeway that is within 150 miles of a metropolitan region. These channelized areas (also called “refugee lines of drift” by Military Police war game planners) should be studiously avoided.
Conversely, there are areas between lines of drift that will likely be bypassed by refugees and looters, due to poor access.(Constrained by small winding mountainous roads, water obstacles, intervening canyon lands, et cetera.) Some of these bypassed zones may be fairly close to urban areas. It is a dangerous gamble, but if for some reason you must live near a city, I suggest that you carefully search for what may be a largely bypassed zone for your retreat and/or home. A few regions that may be bypassed come to mind, based on my travels and from first hand accounts by my associates. (There are many others that are similar–do some research to find ones in your region). These include:
Portions of the Ouachita Mountains, west of Little Rock, Arkansas
Some islands in the Great Lakes region
Parts of Sabine County, south of Shreveport, Louisiana
The periphery of Harry S. Truman reservoir, 60 miles southeast of Kansas City, Missouri.
Portions of Dewey and Custer Counties (80 miles west of Oklahoma City.)
The Santa Rita Mountains, southeast of Tucson, Arizona
The Chiracahua Mountains, in the southeast corner of Arizona
The Mount Hamilton region, Alameda County, California. (East of San Jose, and south of Livermore.)
Parts of the San Joaquin River Delta, east of San Francisco, California
Some islands in the Puget Sound, Washington
Driving the back roads of your region will probably reveal other similar areas that might be bypassed. BTW, I’d appreciate input from readers about other potentially bypassed areas.