You got to be nuts. Sixty miles a day on the same course? Sixty miles in each of the 48 contiguous states (57 if you are Obozo)—now that would be a goal worth doing.
“Sixty miles in each of the 48 contiguous states”
The race distance is the distance from the west to the east coast of the US plus 11 marathons.
https://en.wikipedia.org/wiki/Self-Transcendence_3100_Mile_Race