A good beginner swim workout would be the standard swim try to do as many laps as you can in the pool. It is recommended to try to swim about 400m-1200m.
A 400m dash is 0.4km.
1km = 1000m so the 1500m only
Otis Harris
Alberto Juantereno from Cuba won the 400m and 800m at the Montreal Olympic Games in 1976.
The 440-yard dash is about 8 feet farther than the 400m.
i am 13 and i got 57 for 400m
Tonique Williams-Darling of the Bahamas.
about 60 seconds.
Michael Johnson 43.84
She won a silver medal in the women's 400m dash.
In my opinion, it is not if you are running anything more than a 55m dash. Since there are so many turns, you most likely won't get as good times as on a 400m track.