a good time in the 70 meter dash for an olympic medalist would be about 6.8 to 7.6
A good time for 100 meter dash for your age is 11-12.5 seconds.
Around a 24-28 seconds on 200 meter dash is a good time.
6.3 and lower
is 42 seconds a good 300 meter girls time for a 17 year old
The 2004 Olympic gold medalist in the 100 meter dash was Justin Gatlin of the United States in a time of 9.85 seconds.