Acres of wilderness away from adjacent travel routes and developments outside the wilderness is a required measure under the remoteness from outside indicator. The remoteness from outside 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 outside development 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.