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.
150 seconds
30.79 seconds
if he is on a swim team than about 35 seconds and if he is not and just trying it about 40 to 45
50 seconds
31 seconds
A fast time would be atleast a 25.
For the average 14-year old boy, I would say the average 50m free time would be about a 29.40 sec.
A good time would be 29 seconds.
20 seconds
My 8 year old son just swam it in a minute and 5 seconds
There really isn't an average time because it varies about how fast people are. But I would say around 59.999 seconds?
65sec