What was the longest home run ever hit? The answer is that there is no real precise answer really because the distance balls were hit was often measured from where a ball landed after rolling in many cases. Clearly, the most consistent long home run hitter was probably Babe Ruth who purportedly whopped the longest recorded drive at around 575 feet at Briggs Stadium in Detroit on July 18th 1921; although, Mickey Mantle may have come pretty close to hitting one a lot further in a drive that was interfered with by a Yankee Stadium balcony as it was ascending on May 22nd 1963 off pitcher Bill Fischer. So, we can say Babe Ruth hit the longest home run ever.