Is it Possible to traverse the entire USA off road?
I have been wondering how possible it might be to traverse substantial parts of the USA off road, avoiding as far as possible sealed roads. I have this vague impression that there exist ancient (by US standards!) trails that some people hike or pony trek on.
Do such trails exist? If so how can they be identified and does right of way exist, is it legal to drive on them?
I am thinking crossing more southern to northern borders on either side of the Rockies.
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