The 26-year-old runner dropped more than two seconds off her previous personal best time in order to get the world record. She is a world champion in the 1,500-meter indoor event and trains with the Nike Oregon Project.
It's not often that you see a decades-long track and field world record fall. However, more occurred in this particular race than a world record being established. There were also four national records set at the race, and nine of the 12 finishers set personal bests.
The men's world record for the mile was established in 1999 by Morocco’s Hicham El Guerrouj -- a time of 3 minutes 43.13 seconds. It has dropped 16 seconds since Great Britain's Roger Bannister ran the first sub-4-minute mile in May 1954.
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