Or any other marathon? I just don't get it. You've got guys and some women over 50 who can maintain sub-6:00 minute pace for 26 miles. There were 32 runners age 45-49 who ran 2:32 to 2:45. It's one thing to be fast when you are young and your body is biologically primed for it. It's another to be fast when 99% of your demographic is lining up for prostate checks and early retirement.
I know there a ton of info here on LRC about longer recovery times in workouts, taking long period off from running, strength training, etc., but it still doesn't make sense to me.