I have 25 acres and my ladies free range, but they also have a personal 20x50 run. It is great to keep them there when I am leaving, we have lots of fox activity etc.
They stay in the run most of the winter/snowy, too easy to pick off in the snow. In the spring, summer and fall they stay there until the sun is well up and then they go wild for the day. They don't go too far (usually within 400 feet) of home.....but they do get out that far. They know to come running when we call as always give them scratch for that. So when it gets late in the day they are confined to the run in the evening before we close the coop door for the night