I was up in Evarts KY this weekend and best we could tell we were talking to a guy about 3 miles away, BUT we were up on the mountain. Most of what I use it for is with my "group" so we are all within a 1/4 of a mile from each other.
A few of the guys use the portable "bubble pack" radios you can get almost anywhere and they do fine also. I prefer a mounted radio. I can post pics in a day or so if anyone wants.