The pitch is rectangular in shape. The longer sides are called touchlines. The other opposing sides are called the goal lines. The two goal lines must be between 45 and 90 m (50 and 100 yd) and be the same length. The two touch lines must also be of the same length, and be between 90 and 120 m (100 and 130 yd) in length. All lines must be equally wide, not to exceed 12 cm (5 in). The corners of the pitch are marked by corner flags.
For international matches the field dimensions are more tightly constrained; the goal lines must be between 64 and 75 m (70 and 80 yd) long and the touch lines must be between 100 and 110 m (110 and 120 yd). In March 2008 the IFAB attempted to standardise the size of the football pitch for international matches and set the official dimensions of a pitch to 105 m long by 68 m wide. However, at a special meeting of the IFAB on 8 May 2008, it was ruled that this change would be put on hold pending a review and the proposed change has not been implemented.
Although the term goal line is often taken to mean only that part of the line between the goalposts, in fact it refers to the complete line at either end of the pitch, from one corner flag to the other. In contrast, the term byline (or by-line) is often used to refer to that portion of the goal line outside the goalposts. This term is commonly used in football commentaries and match descriptions, such as this example from a BBC match report; "Udeze gets to the left byline and his looping cross is cleared..."