My son is 9.5 years old and does 21.5 seconds, he is pretty good at his class
Well, it depends on how hard and how many times a week they train. I have a 10 year old brother who swims 50 metres freestyle in 33 seconds, but he is a regional qualifier and is rather good for his age.
my time now is a 1:03
A good time would be 29 seconds.
150 seconds
A Good time would be :56-58 for 15 year old guy, a great time would be 0:50-52
a good time is between 1:07 and 1:00. My time currently is 1:06 about. I am 13 and I swim year round though. Your time is really good.
if he is on a swim team than about 35 seconds and if he is not and just trying it about 40 to 45
9.58
55?
10 minutes
2:30
30.79 seconds