1.Ease of logistics to/from start and/or finish. Plains, trains or automobiles. It’s my vacation.
2. Relatively safe route, preferably with scenic highlights.
3. Established camping areas with potable water. I don’t stealth camp, trespass, or whatever you want to call it, and don’t want to have to ask around for a kosher place to camp.
4. Relatively easy supply opportunities with decent selections. I like to cook dinners and don’t like Subway.