Albert Pujols hit the longest home run out of Busch stadium in 2011. The home run was 465 feet.
Willie Stargell hit the ball out of the park.
Albert Pujols 497 feet
Mickey Mantle was said to hit a homer 535 feet in Old Yankee Stadium.
565 feet, Mickey Mantle at Yankee Stadium.
Mark McGwire hit the longest home run at Busch Stadium II, that was closed in 2005. Mark's home run was hit on May 16, 1998 and traveled 545 ft.