Miles of unauthorized trails is one of a group of measures under the remoteness from inside indicator -- one or more is required. The remoteness from inside indicator is under the opportunities for solitude monitoring question for solitude or primitive and unconfined recreation quality.

This measure is reported as a single value for report year.

The table below shows reported unauthorized trails trends at each USFS wilderness using this measure. As ever, selected measures have filled grey circle, and colors indicate an upward, stable, or downward reported trend. Unselected measures can also be recorded, and are shown as hollow circles in the appropriate color.