Why is this even a question wrote:
Holy crap! Look at this day
There's 50+mi on this day with almost all of it in the 7min pace or faster.
This day alone discredits him in my mind.
It adds up to 60.0 miles in 7:18:01 which is 7:18/mile pace.
If you remove the initial 4.81 miles in which he dawdled at an 11:21 pace, you have 55.2 miles in 6:23:22 which is 6:32/mile pace.
You don't believe this?
I'm sure the video footage of Mr. Young walking 12-minute pace is just a sabotage effort by infidels to discredit his real 7:00-pace ultraracing abilities!