[jandrewrogers]

In the US, most of the wilderness areas, national forests, or the vast Bureau of Land Management areas will work. Especially in the western US, you are rarely more than a few hours from wilderness areas where people seldom tread.

While you do see people on the old mining/forest trails occasionally even in the remote areas, that quickly drops to zero if you leave the trails. In many regions there are semi-drivable trails that will take you to within a mile or two of lakes/rivers/etc that are completely off grid and never visited by people. Topographic maps are a good resource for finding these areas.

[wwwater]

Yes, I guess the US has a lot of uninhabited regions, while in western Europe I often have a feeling, there is not a single hectare of land without a village.