Softball Field Dimensions - The pitching circle radius is 8 feet and the batter's box is 4 feet forward & 3 feet backward from the point where the plate breaks on the angle. When using league painting equipment, there is a string set for scribing the circle. For the batter's box, place the handle of the frame parallel to and touching the straight side of the plate with the shorter side of frame marked "front" facing towards the pitcher's mound. CLICK HERE FOR DIAGRAM.