OozmaKappa wrote:
The 10th best marathoner today could probably break that record on their off day while smoking and drinking, AND stopping occasionally to check in on their farms.
If this were the kind of event that depended 'only' or 'mostly' on aerobic fitness that would be right. Just jog and sip on sugary drinks every now and then to refill your tank and that's it. But aerobic fitness hardly even matters. I guess most people on Letsrun would relate to the average pace of this WR as "easy" or even "jog". I'm slower than many around here yet I would feel like 'I could run like this forever!" when running at 8 minute miles which is only slightly slower than Sorokin's 24h pace. Yet the most I have run would be 5-6 hour 'jog hikes' which would end like 'I could go on if I had more food and water, maybe I could buy some at the next town...nah, I'm not enjoying this anymore, better catch a ride home'
You might know this from the difference between half marathon and marathon: if you're competitive, you likely don't bother with water/nutrition at the half; you have to take care about this to perform your best at the full. When the distance is several times longer, all this stuff like nutrition, blisters, mental toughness and such become way more important than top level fitness.
To put this to the extreme, imagine 'backyard chess ultra': two players play chess and have to run a lap of the track after each turn. Running is untimed (save for some very generous threshold to determine if a player couldn't finish his lap) and the winner is determined solely on the chess board. Now, we have two players: an elite marathoner who barely has any chess experience, just knows the rules, and a word class chess player who jogs 45 minutes 6 days a week to keep himself fit. Who'd you'd bet on?