India, Aug. 8 -- Faith Kipyegon takes her seat in front of a wall displaying three posters.

The first was from Eliud Kipchoge's first attempt at running a sub-two-hour marathon under curated conditions in 2017 in Monza, where the clock stopped at 2:00:25. The second was from Kipchoge's second crack at it two years later in Ineos, where he crossed the barrier and landed at 1:59:40. The third was from Kipyegon's own shot at becoming the first woman to run a mile in under four minutes this June in Paris, where she came up short.

Kipyegon is pretty sure there will be a fourth poster in future.

"Who is next, it's written there," Kipyegon said, pointing to the blank space on the wall next to her poster. "One day, one time, it will happen." ...