Yes of course. But believe it or not this is exactly the type of training guys like "Dr." Maffetone would recommend (and tons of people buy his training books). My "Max Aerobic Function" Heartrate is 156 according to his 180-age +( adjustments formula). I can run about 5:40/mile pace at that HR....it would be way too hard to sustain for an "easy day" for me...I run 7min pace a lot of times. During base phase this kind of steady state running is all he recommends...and it's way too hard (much like a 31min+ 10km runner trying to train at 6min pace all the time for 100mpw). Very common sense, but for some reason people still do a lot of training with their "easy days" at around 6min pace. Obviously this whole thing is a hypothetical situation, and the pure speculation of what kinds of PRs a runner training with this "schedule" could put down is just for fun.
High school kid gibberish wrote:
Any runner with common sense and that has trained over any period of time would know fundamentals of training would scratch their head at this question.
As you point out variables in training pace, distances and periodization contribute to a better balanced healthy competitive athlete.
You 6 min. pace singles 100 mile guy would end up injured, bored and stuck at certain competitive level.