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I don't know how but I stumbled upon this post which talks about how a woman's accidental slip ended a period of time during which she'd run at least one mile for 21,212 (hey, nice palindrome number!) consecutively.

That article also mentioned that if you make it to a year running a mile a day minimum (I'm calling it #dailymileminimum), you can join one of only about 400 runners. Only 400!