La'Vere Corbin-Ong
Andy Morez
A boy called Chris Kirkland not sure how long it took him though.
Chewbacca
One African American male who holds a T&F world record is Michael Johnson in the 400m dash.
I don't know about the record, but I run the 400m for high school track. My PR is 63 seconds, but there are other girls on my 4 x 4 team who run 56's and they broke the school record. To get anywhere near a scholarship, you have to run at least a 57 for the 400m. It sounds easy but don't under estimate it until you try to run that time.
The current world record holder in the 400m is Wayde van Niekerk from South Africa, with a time of 43.03 seconds set at the 2016 Rio Olympics.
Michael Johnson of the United States is the current 400m record holder. He ran 43.18 on 26 August 1999 in Seville.
No, he retired from athletics in 2001. He still holds the 400m world record set in 1999.
MICHAEL JOHNSON - 1995 (44.63sec)Kerron Clement - 12 Jan 2007 (44.57sec)
The Olympic 400m men freestyle record is 3:40.59 by Ian Thrope.
57.2 secs is the Pacific School Games record for 13 year old girls 400m record. It was set in 1984 by Vanessa Fielding. Records can be found in the related link.
The world record holder for the women's 400m is Wayde van Niekerk of South Africa, who set the record of 43.03 seconds on August 14, 2016, at the Rio Olympics.