Mine range freely over an acre. They go into their coops at night, two of which have automatic chicken doors. I used to have a run, fenced around all the coops, but once I let the chickens range freely, the RUN fencing got in the way of things and I took it down. Now they stay inside the perimeter fence of the whole property.
Except for one hen who decided she didn't want to be the roosters' favorite any more, and she moved next door to the empty lot for her daytime activities. She comes home every night to roost in a coop, though. And her back feathers have all grown back very nicely. She and I have conversations as she walks back through the gap between the two six foot gate sections, then down the long drive to my front yard, and then around to the back yard after everybody else has mostly gone to roost. I find it amusing.
She may, someday, not come home. So far, however, she trundles back home every evening.