99 yards
In the NFL, the penalty is 15 yards. In college, the penalty is 10 yards.
1971 Oklahoma Sooners
Unnecessary roughness, unsportsmanlike conduct or delay of game may lead to a fifteen yard penalty in the NFL. There are two kinds, one is five yards and there is a fifteen yard one. But the NFL took out the five yard one in 2008.
In college football, the penalty is 15 yards. In the NFL, the penalty is 10 yards.
100 yards
2
5 yards
12 yards.
The maximum distance that can be given as a penalty in American football is half the distance to the opponent's goalline; for example, if you were on the 15-yard line and received 10 yards of penalty, the maximum you could gain is 7.5, or 8 yards rounded.
It is called the penalty arc. It is to ensure that defenders are 10 yards from the penalty spot when a penalty kick is taken.
The standard penalty for delay of game in American Football is 5 yards.