Overall Dimensions: At the professional level, the total size of the field is 120 yards (360 feet) long by 53.5 yards (160 feet) wide; that total length is broken down into 100 yards of playing field and two end zones that are each 10 yards in length.owever, there are a few significant differences: Overall Dimensions: The Canadian Football League plays its games on a larger field than its American counterpart. The total size of a Canadian field is 150 yards (450 feet) long by 65 yards (195 feet) wide, including end zones that are 20 yards deep.