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Field goal range
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 18 yards (8 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 8 yards in which the holder stands behind. 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 48 yards (in American football) or 38 yards (in Canadian football).
==Average Field goal range==
The exact field goal range varies for each team, depending on the ability of the team's placekicker. While some weaker placekickers may have trouble kicking field goals longer than 40 yards (making field goals from beyond the 23 difficult), others may consistently make 50-yarders, making it practical to kick from beyond the 33. For most NFL kickers, the 35-yard line is typically the limit of their field goal range. Weather conditions, particularly wind, also have a significant impact on field goal range; kicking with the wind at the kicker's back significantly increases field goal range, while kicking against the wind or with a stiff crosswind will greatly reduce the kicker's effective range, while generally there is no advantage beyond assured targeting of a kick if a game is being played indoors. Altitude also has an impact on kicking range; both the longest punt in NFL history and three of the longest field goals in NFL history took place in Denver, Colorado, which is more than higher in elevation than the next-highest NFL city (the Phoenix suburb of Glendale, Arizona).
In high school football, players are permitted to kick off special flat kicking tees up to two inches high. The NCAA banned the use of kicking tees in 1989. Most of the longer-range field goals in NCAA history were kicked prior to the elimination of tees; the use of tees allowed the ball to be elevated out of the field's grass or turf, reducing friction in the opening milliseconds of the kick and allowing for longer kicks.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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