Faith Kipyegon ran a mile in 4 minutes, 6.42 seconds — more than a second faster than her world record — at “Breaking4,” a special event billed as Kipyegon’s attempt to become the first woman to run a mile in under four minutes.

The three-time Olympic champion will need to shave more than 7 seconds off her personal best, a record she set in 2023. But if she succeeds, the Kenyan runner won't make the official record books yet.