There are exactly 120 feet in a 40-yard dash. There are 3 feet in a yard, which means that 40 yards can be converted to feet by multiplying it by three.
The 40-yard dash is a popular speed test for American football players. It consists of an all-out sprint for 40 yards. While some positions are expected to have better times on the test than others, all positions typically take the test. The lower the time, the better the score, and the more a player will stand out to scouts and coaches. The test is supposed to mimic the distance between the line of scrimmage and a typical punt, where reaching the ball quickly is important.