Swimming speeds are slower than running speeds because of the higher viscosity of water, compared with air. And, because swimming uses muscles substantially less effective than the major leg muscles.
[The average speed for the 200m running races is better than that for the 100m running race, because of the starting speeds not being instantaneous. ]
The differences in propulsion and energy expenditure between swimming and running contribute to the gap in world record times for the 100m distance. Swimming involves more drag, resistance, and limited ability to generate speed compared to running on land. Additionally, the human body is more naturally adapted for running rather than swimming, resulting in faster sprinting times on land.
David Rudisha is the longest 800m sprinting
Florence Griffiths Joyner in 21.34
Usain Bolt holds the world record for fastest 100m time.
The world record for swimming a mile is held by Sun Yang of China. Sun's time is 14 minutes 31 seconds, set in 2012.
Cesar Cielo
Mark Spitz
She Broke woman world record, win Olympic medals, and put the USA on top in sprinting.
There are many records for swimming. This is because there are many different swimming strokes. They were also set at different times.
In 1967 nobody got a world record
The current world record for swimming a mile (1,609 meters) is held by Katie Ledecky, with a time of 15 minutes and 20.48 seconds. She achieved this record in 2018.
By swimming faster.
Although it looks like UJR it's actually WR and stands for World Record. If someone is swimming in front of the yellow WR line it means they are faster than the current world record.