How fast do you have to be to run a 4.5 40-yard dash?

How fast do you have to be to run a 4.5 40-yard dash?

If a running back has a 40-yard dash time of 4.5 seconds what would this be in miles per hour? A 40-yard dash completed in 4.50 seconds would be about 18.18 miles per hour (mph), after rounding to two decimals. Convert 18.18 miles per hour to kilometers per hour using the online converter.

Is a 5 second 40 slow?

If you can’t dunk, the odds of you running a sub 5.0 forty are pretty much zero. It requires the same kind of fast-twitch muscles.) We rarely see any football player voluntarily admit to running over a 5.0 forty because doing so means they’re slow. Speed is king.