Sticking with RockyMountainRoads.com, we come to the exit for Force Road. They say, "As we now enter the Gillette metropolitan area, signs of civilization emerge." The population of Gillette is less than 20,000, so we may be stretching the dictionary definition of "metropolitan."
I ran another seven miles this morning, at a decent pace. It was quite humid, but not so hot as it has been.