A free-range hunt means an animal is free to roam and not confined by artificial barriers such as human-made fences.
You will struggle to find a hunting property in the United States that is truly free-range with no fences—in reality, they do not exist.
There will be artificial barriers at every hunting property, be it a park border, a fence on a neighboring property, or a barrier to public roads.
A better question to ask yourself is:
what size hunting area is large enough to be classified as free-range to you?