I am 13 and i am always the fastest kid on all the sports I play i run a 7.4 60 yard dash the average between 7.7-8.8
As a 100 yard dash sprinter in the 60's the average time would be about 10.2 to 10.3.
I am 12 and I got 7.4 but I'm pretty sure the average is 7.8 to 8.6
An 11.0-second time in 100 meters is equivalent to 6.035 seconds for a 60-yard dash.
the average speed is a 7.1 60 yard dash.
A 6.8 second 60-yard equates to a 4.53 second 40-yard.
You can't. It would be like extrapolating a marathon time from a mile time.