>I see your point, and you may be right on...but
>these ultra long distances I think require their
>own special talent,toughness and the body simply
>being able to hold up for that long. I'd like to
>see what Kannouchi and other world class
>marathoners could do also. It's possible they
>could blitz the record but it is also possible
>they could break down and not even be able to
Kouros has pretty much all of the ultra world records beyond 100 miles, but his most astounding records have come in multi-day races. It has been said that part of his total dominance is his ability to work at high levels with very little sleep. This is one of those "special talents" ultra-runners need.
Even though I regard Kouros very highly, I think it's futile to compare him to marathoners and track runners -- the events are simply much too different. I'll say that without a doubt he's the greatest ultra-marathoner of all time and leave it at that.