Several of the fastest wide receivers and running backs in the National Football League can run 120 feet (40-yard dash) between 4.24 and 4.27 seconds. It is well-documented that many football players can run 120 feet in about 4.5 seconds. Football players at most positions and average-fit people can run about 20 feet in about … Continue reading What is Your Safe Distance to Engage the Threat: The 21-Foot Rule