The following times are the world records for the 50 meter backstroke for men and women and in short course (25 meter) and long course (50 meter) pools.
Men's 50m Backstroke:
Long Course: 24.04 seconds by British swimmer Liam Tancock at the 2009 FINA World Aquatics Championships in Rome.
Short Course: 22.61 seconds by U.S. Swimmer Peter Marshall at the 2009 FINA Swimming World Cup in Singapore.
Women's 50m Backstroke:
Long Course: 27.06 seconds by Chinese swimmer Zhao Jing at the 2009 FINA World Aquatics Championships in Rome.
Short Course: 25.70 by Croatian swimmer Sanja Jovanović at the 2009 European Short Course Swimming Championships in Istanbul.
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 40 yard dash time is 4.22 seconds, achieved by John Ross at the NFL Scouting Combine in 2017.
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.
4.40 was Chad Johnson's fastest time.
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).
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.
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.
4.33 -Unofficial. His Official fastest time is 4.41