Really, Ghost, what is your point?
Are you out to sell a low-miles plan for Runner's World? Are you working undercover for John Bingham and Jeff Galloway?
Your examples prove nothing. You cannot "redo" those athletes' seasons with higher mileage.
All you have to go on is their actual training and performance off of what talent they have.
Those are some great times, but they have been surpassed again and again and again.
And do you know what the very best in the world seem to share in common in training?
The development of an extensive base of AEROBIC ENDURANCE running (re: HIGH MILEAGE).
John Kellogg said it best, to paraphrase: "If you are a long distance runner, it is best to train LIKE A LONG DISTANCE RUNNER."
Haile Gebrselassie ran every day to school from the age of 7-8 until 16-17 10 kilometers to school and 10 kilometers back. That is 20K per day times 5 school days per week times 30+ school weeks per year times 10 years= 18,600 MILES (NOT including all the running around he did on his farm and the 3 hour treks for water each day).
His times? 1:46, 3:31.76, 3:52.39, 4:52.86, 7:25.09, 8:01.08, 12:39.26, 26:22.75, 41:38, 59:40, 2:06:35.
If you can find another person with that range and longevity, I would be astonished.
Daniel Komen ran 12.5 miles per day as a young boy in Kenya. His times?
3:29.46, 3:46.38, 7:20.67, 7:58.61, 12:39.74.
Again, some of those times above have been taken cracks at by the greatest (El Guerrouj, Bekele) and not even come close.
There are dozens more for you. For every example you can find of some super-talent who succeeded on "30 miles per week," I ask, how many of those talents have carved for themselves the type of legacy that some of the Gold Medalists and WR Holders have?
Not many, I think.