March 10, 2019
![](https://www.letsrun.com/wp-content/uploads/2019/03/IMG_1052.jpg)
American Record Holder Athing Mu Gets Beat By High School Freshman Roisin Willis, Who Sets National Freshman Record for 800
February 26, 2019
![](https://www.letsrun.com/wp-content/uploads/2019/02/Mu_Athing12357a-USAi19.jpg)
16-Year-Old Athing Mu Has Ribbons in Her Hair, Braces in Her Mouth...and an American Record on the Track
Learn about the high schooler who shocked the world at Toyota USA Indoors.