The penalty mark is 12 yards from the goal line.
The penalty spot is 12 yards from the goal line.
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.
According to FIFA "Within each penalty area, a penalty mark is made 11 m (12 yds) from the midpoint between the goalposts and equidistant to them. "
The Penalty Mark is 12 yards (36 feet, or just under 11 meters) from the Goal Line. This distance is sometimes reduced to accommodate very young players.
The goalkeeper must have both feet on the line for the penalty kick.
The goal post dimensions in Canadian football are the same as in American football. The goal posts are on the goal line. The hash marks are not in line with the uprights.
A football is 11 inches long. There are 32 inches in a yard. A football field is 100 yards long from goal line to goal line. Therefore it would take 290 footballs to span from goal line to goal line.
7 yards from the goal line
All football fields are 100 yards long from goal line to goal line
All players, except the penalty taker must be at least 10 yards away from the penalty spot when the penalty is taken. As the Penalty Area extends 18 yards from the goal line, and the Penalty Spot is 12 yards from the goal line, the distance from the Penalty Spot to the edge of the Penalty Area can be as little as 6 Yards. The Arc - not half circle - marks the area outside the Penalty Area, that is within 10 yards of the Penalty Spot, and therefore outside which players must be when the penalty is taken