50 yds is not a recognised distance in competitive swimming, the closest distance actually competed is 50m freestyle which is approximately 10% further and the world record is 20.48s by Amaury LEVEAUX
The women's record for the 500 yard freestyle swim is held by Katie Ledecky with a time of 4:24.06 set in 2018.
What the hell is a fourth yard?!
4.3
the fastest man alive can run it in 3.46 seconds from a running start
4.40 was Chad Johnson's fastest time.
The fastest time for swimming the 50-yard butterfly is 21.11 seconds, achieved by Caeleb Dressel at the 2018 NCAA Division I Men's Swimming and Diving Championships. Dressel set this record while competing for the University of Florida.
Vernon davis
he was the fastest, running a 4.2 forty yard dash.
The NFL's fastest official 40 yard dash time was 4.25 seconds by cornerback Fabian Washington.
A two-hundred yard freestyle is an event at a swim meet in which the swimmer will swim the freestyle stroke back and forth across a normal pool four times (twice across, twice back).
4.33 -Unofficial. His Official fastest time is 4.41
Bo Jackson ran a 4.12 but it was not electronically timed and therfore could not be verified. Chris Johnson ran a 4.24 at the NFL Combine: The fastest electronically timed 40 yard dash.