The fastest time for the girls 50 meter swimming is 18.19.
I belive the fastest womens 2400m run was around 10 minutes. it's much faster than that, i know a 13 year old with a time of 8:40!
The fastest child on earth is 7.4
the fastest time so far is an 11.2
usain bolt has the fastest time with 9.58 which he got in 2009 at the world championships in Berlin
That is not a standardized race; it is not raced at an international level, and so the fastest time has not been recorded
Florence Griffith-Joyner 10.49.