Field goal range is the part of the field in American football where there is a good chance that a field goal attempt will be successful.
A field goal is normally 17 yards (7 yards in Canadian football) longer than the distance of the line of scrimmage to the goal line,
as it includes the end zone (10 yards) and 7 yards to where the holder places the ball.
In Canadian football, the goal posts are on the goal lines, in front of the end zones.
Therefore, if the line of scrimmage is at the 30, the field goal would be 47 yards (in American football) or 37 yards (in Canadian football).