Standard football field size
1. The playing field must be a rectangle, and the length of the sideline must be longer than the length of the goal line.
Length: Minimum 90 meters (100 yards) Maximum 120 meters (130 yards)
Width: Minimum 45 meters (50 yards) Maximum 90 meters (100 yards)
2. International competition standards
Length: minimum 100 meters (110 yards) maximum 110 meters (120 yards)
Width: Minimum 64 meters (70 yards) Maximum 75 meters (80 yards)
Field size: Competition field Must be rectangular and the length of the touchline must be longer than the length of the goal line. The length is 90-120 meters (100-130 yards), and the width is 45-90 meters (50–60 yards).
International competition: length 100-110 meters (110–120 yards), width 64-75 meters (70-80 yards)
World Cup final stage: length 105 meters (about 115 yards), width 68 meters (about 74 yards).
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Football Field Marking
1. The playing field is marked with lines, and these lines should be included in each area as the boundary line of each area on the field.
2. The two longer boundary lines are called sidelines, and the two shorter lines are called goal lines.
3. The width of all lines should not exceed 12 cm (5 inches).
4. The playing field is divided into two halves by the center line.
5. Make a center mark at the midpoint of the center line of the field, and draw a circle with a radius of 9.15 meters (10 yards) from the center mark.
Goal Area
Goal Areas are located at opposite ends of the field and are defined as follows:
Goals must be placed in the center of each goal line. They consist of two vertical columns equidistant from the corner flagpoles and horizontal beams connecting their tops. The distance between the two posts is 7.32 meters (8 yards), and the distance from the lower edge of the beam to the ground is 2.44 meters (8 feet). Both goalposts and crossbars have the same width and thickness of not more than 12 cm (5 inches). The goal line is the same width as the goal posts and crossbar. The goal net may be attached to the goal and the ground behind it, and should be properly propped up so that it does not interfere with the goalkeeper. Goal posts and crossbars must be white.
From 5.5 meters (6 yards) from the inside of each goal post, draw two lines perpendicular to the goal line. These lines extend 5.5 meters (6 yards) into the football field and are joined by a line parallel to the goal line. The area bounded by these lines and the goal line is the goal area.
penalty area
Penalty areas are located at either end of the field and are defined as follows:
From 16.5 meters (18 yards) from the inside of each goal post, draw two lines perpendicular to the goal line. These lines extend 16.5 (18 yards) meters into the playing field and are joined by a line parallel to the goal line. The area bounded by these lines and the goal line is the penalty area.
A penalty spot shall be established in each penalty area 11 meters (12 yards) from the midpoint of the equidistant distance between the goal posts. Outside the penalty area, an arc is drawn with a radius of 9.15 meters (10 yards) from each penalty spot, called the top of the arc.
Flagpoles
One no less than 1.5 m (5 ft.) ) on a flat-topped flagpole with a small flag on it. Flagpoles may also be placed at both ends of the midline and not less than 1 meter (1 yard) beyond the sideline. It is easy to distinguish when the ball is out of bounds, and can distinguish whether it is a corner kick or a throw-in kick.
Corner Arc
On the playing field, at a distance of 1 m (1 yard) from each corner flagpole Draw a quarter circle for the radius. It is convenient for players with different left and right feet to take the penalty.
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