Faith Kipyegon ran the mile of her life today. And yet the 31-year-old Kenyan, the best female middle-distance runner of all time, failed to add a new line to the history books, by running six seconds shy of becoming the first woman to run one mile in under four minutes.

Triple Olympic gold medalist Faith Kipyegon will try to become the first woman to run a mile in under four minutes later Thursday in Paris.