18 minute miles for 40 days. It boggles the mind.<p>Keep in mind the average walker does 20 minute miles so it is barely faster than walking but still, 40 days. I&#x27;ve done marathons and I wouldn&#x27;t walk for 40 days unless my life depended on it.<p>This story reminds me of that one guy with an actual &quot;superpower&quot;. He has the genetics where his muscles can actually burn lactic acid as fuel. So he has impossible endurance. Dean Karnazes - has run 350 miles in 80 hours (13 minute miles). He&#x27;s done 50 marathons in 50 consecutive days.