Ball hit by Mickey Mantle on April 17, 1953 at Griffith Stadium to set a new distance record for home runs. (Courtesy the National Baseball Hall of Fame) The longest home run ever hit did not go 565 feet. Not even close. Actually, the longest home run ever hit isn't even the longest home run ever hit.
At the minimum, a baby must be able to hold his head up steadily and have his feet touch the floor to use a walker. Walkers are designed for use by infants between the ages of 4 and 16 months, according to Consumer Reports, and children who can already walk should not use them.
5 to 6 months. By 6 months, your baby will be able to hold his head steady and erect, and he'll flex it forward when he's pulled into a sitting position. He may be ready for a jogging stroller at this point.