Check out Mike Shattuck on Strava. He has run at least 26. miles everyday this year and plans to get 10,000 miles by the end of the year. He has already run 8,700 miles this year.
And before anyone says he isn't "running" because he is doing 13 min/pace, go walk a 13 min/pace for 26 miles and get back to us at easy it was. If it feels too easy, do it again the next day, throw in some 50 miler's and and then do another 50 miles the next day. Then you can critique.