- Aged 16, Athing Mu is already an American record holder.
- At last month's American Indoor Championships, she clocked one minute 23.57 seconds to win the women's 600m.
"When I was taking a picture next to the timer, I actually cried."
Aged 16, Athing Mu is already an American record holder.
At last month's American Indoor Championships, she clocked one minute 23.57 seconds to win the women's 600m.
The event might not be in the Olympics or World Championships and so is staged rarely but Mu's time is an American indoor record and the second-fastest indoor time in history. It has been said her time equates to doing an 800m in one minute 57 seconds - potentially a championship medal-winning time.
Her assistant coach Bernice Mitchell was not surprised, saying: "I've been telling her she's been amazing since she was six and people were telling me I was crazy."
Here BBC Sport meets the New Jersey teenager dreaming of Olympic glory.
'I'd tag along with my brother... I've been there ever since'
Mu is the second-youngest of seven siblings in a family of Sudanese heritage.
As a child she would watch her brothers at Trenton Track Club, and soon started running herself.
"All of my siblings have run track," she says. "The eldest, he's 26, actually started off the running.
"When he used to go to Trenton Track Club, he'd tag me along and I'd just be running round the track. I've been with them ever since."
Mu is a pupil at Trenton Central High School, but does not run for their track team.
She says: "Since freshman year, the coaches have been trying to recruit me but I've just preferred to run with my club since I've been doing so well with it."
'Every single day it just sinks in a little bit more'
In an incredible weekend in New York, Mu lowered her 600m best by almost four seconds. Russia's Olga Kotlyarova - who clocked 1:23.44 in 2004 - is the only woman to have run the distance quicker.
"I was very, very, very, very surprised," says Mu, who is nearly 6ft tall. "I honestly didn't expect that.
"After I ran I didn't really get to talk to many people because I had to go to straight to drug-testing.