You can't. It would be like extrapolating a marathon time from a mile time.
40 yard dash/10 yard dash= 4 What ever the time you got for the ten yard, you multiple it by 4. It could be an average of your running time per 10 yard dash. Sometimes for several runners, they would feel worn out by the time when reaching the 40 yard mark.
A rough estimate would be around 4.3-4.4 seconds for the 40 yard dash when converting a 11.5 second 100 meter dash time.
Usain Bolt's current 4o yard dash time is 3.97.
Eli Manning's 40-yard dash time is 4.92.
A reliable way to convert a hand-held 100-yard time to an electronic 100-meter time is to multiply the hh-time by 1.103. Therefore, 10.2 in the 100-yard dash time equates to an 11.25 100-meter dash time. Also, to convert an electronic 100-yard dash time to an electronic 100-meter dash time, multiply the first time by 1.088. For example, a 10.20 electronic 100-yard time equates to an 11.10 electronic 100-meter dash time.
He ran a 40 yard dash in the 4.5s
His time at the combine prior to his rookie season was a 4.64 seconds 40 yard dash.
Jake Plummer's 40 yard dash time is 4.76 seconds. He is in the Air Force.
A 10 yard dash time is really not a good judge of your speed, the distance is too short. A 40 yard dash is what you need to get a good estimate of your abilities. but I'll give you time for both 40 yard dash-between 5-5.8 seconds 10 yard dash-between 1.3-1.5 seconds
As a 100 yard dash sprinter in the 60's the average time would be about 10.2 to 10.3.
the time took for the 20 yard dash ( run )