In this answer at; I am lost, I found a trail, which way do I go? It claims
...logging roads These may extend many miles into the forest, with multiple branches, all ending in dead ends. There can be 10's or 100s of miles (or kilometers) of roads.
If I am hiking on public land in the US, and find a road, just how far might I walk in the wrong direction, before getting to the dead end and needing to turn around and go back?
Without considering all the dead end branch roads, how long is the longest dead end road on or crossing, US public land?
Clarify: Where dead end = ends in the forest without any services or civilization, at the end or along the route.