Or, "5 Miles of Walking Vs. 5 Miles of Running"....
Recently (say the past year or so) as I do my beloved Harshman Road loop, I have been occasionally encountering a young lady who walks with a pair of dogs. The dogs are large--setters of some sort--and she is a brisk walker. She and the dogs are friendly but focused on their mission of covering ground quickly.
As I run the route I have encountered the young lady and the dogs at various point around the loop. Because the route has no opportunities for short-cutting, I have concluded that the woman and the dogs walk the whole 5-mile loop.
Which must take them 1:15 or so at 15 minute brisk walking pace. In the big scheme of things, an hour and fifteen minutes is certainly very doable, but I cannot personally imagine walking that route. Not that it's dangerous or ugly, it's just that walking that far seem to be SO inefficient.
But I must acknowledge that in my 100 milers, I wind up walking at least 20 miles...but that usually comes in short chunks of a mile or less at a time. Not 5 miles in a row. Walking.
I guess the young lady may be looking at me and thinking, "I can't imagine running this loop!"