This will never be known because there is no accurate way of measuring how far a ball is hit. The Mantle homerun never left the ballpark, it hit a facade and fell back on the infield. There is no way of knowing how far the ball would have gone because they don't know the speed at which it was traveling, or how high it would have gone before descending. Using pythagorean geometry like they did for the Mantle homerun is entirely inaccurate. I was at a game in Houston where Sammy Sosa hit a ball into the lights in left field and came crashing down, so using the Mantle rules, it might have gone even further. The measurement system they use in ballparks is also inaccurate. Each park has a diagram and the official scorer looks at where the ball was hit, and judges its height (high, medium, or low), and then using a table with distances determines the estimated distance. Until a ball is hit on the fly without obstruction, and they measure from home plate to where the ball landed on the same level ground, there will not be an accurate measurement of how far a home run has traveled.

Ooh. Interesting question, albeit one that's cropped up on AB before, and is also one likely without a definitive answer, because of the problems of measuring such things. Few long bombs touch ground at the same level as home plate, which leads inevitably to having to estimate a distance based on how far the ball "would" have travelled. Let's start with the record distance as given in the Guinness Book of World Records: "The longest measured home run in a major league game is 193 m (634 ft) by Mickey Mantle (USA) for the New York Yankees against the Detroit Tigers at Briggs Stadium, Detroit, Michigan, USA, on September 10, 1960." However, this figure would seem highly questionable. There's a very nice article at Baseball Almanac on the topic: http://www.baseball-almanac.com/feats/art_hr.shtml which, though dating from 1996, still makes a lot of valid points about the problems of estimating distance. With regard to the above alleged record, it says, "From interviews with the surviving source of the original data, it is readily apparent once again that the ball had bounced several times before it reached the estimated distance." Mantle has another contender. On April 17, 1953, he hit a home run estimated at 565 ft, at Washington's Griffith Stadium off Senators pitcher Chuck Stobbs. While this is one of the first "tape measure" homers, it too seems to have been exaggerated in the telling: http://www.opinionjournal.com/la/?id=110003721 which calls the homer, "as much a part of baseball lore as Babe Ruth's called shot in the 1932 World Series" but then says, "In truth, there is more hard evidence for Ruth's calling his shot than for Mantle's hitting a 565-foot home run." A different story, on Slate.com, gives another slant on the whole thing: http://slate.msn.com/id/2095/ "According to three physicists who have worked independently and have written extensively on the science of baseball, the human limit for hitting a baseball at sea level, under normal temperatures and with no wind, is somewhere between 450 feet and 470 feet." This would seem to go against the frequent claims of 500 foot-plus home runs, and it's likely true to say that both clubs and players have a self-promoting interest in...erring on the long side when it comes to estimating distance, shall we say. "Chicks dig the long ball", as a MLB slogan once said. :-) The above article, in particular, looks at a home run estimated by the Seattle club at 538 feet, and comes up with a figure of 474 feet. There has been at least one legitimate 500-ft shot though. In Fenway Park, there is a single red seat in right field among the green bleachers, about 2/3 of the way up - it marks the landing place of the longest home run hit by Ted Williams. It's 502 ft from home plate; it may not be the longest, but proves 500 ft+ is attainable in the right conditions. For what it's worth, the only figure I could find for the longest home run in Japanese baseball history is 532 feet by Boomer Wells, but that figure is every bit as suspect as any American one, plus I've heard suggestions that Japanese baseballs are more tightly wound than American ones, so fly further. This (along with lower quality pitching) would certainly help explain how fringe MLB players like Alex Cabrera could go to Japan and suddenly hit 50 homers in a season.

Their really isn't one correct answer to this question, I'll try to explain. I’ll start with the home run that Mickey Mantle hit at Griffith Stadium in Washington on April 17, 1953. The entire baseball world was led to believe the ball had traveled 565 feet from home plate to the point where it landed. In truth, that figure derived from the distance from home plate to the place where a neighborhood child retrieved the ball. However, the actual distance in the air was probably about 510 feet (most sources still have this as #1). The same process happened again with Mantle on September 10, 1960 at Briggs Stadium in Detroit when a ball he hit was reported to have traveled 643 feet but it is readily apparent once again that the ball had bounced several times before it reached the estimated distance (this is the home run that the "Guinness Book of Records" has as #1). When your talking about tape measure home runs you can’t leave out Babe Ruth. It was said that Ruth once hit one 587 feet in an exhibition game against the Giants back in 1919. Also his tremendous blow to right-center field in Detroit on June 8, 1926, has often been reported as traveling 628 feet, but again was it measured where it first landed or where it came to a rest. Included among the other great exaggerations in the history of tape measure home runs are Dave Nicholson’s Comiskey Park rooftopper on May 6, 1964 who’s shot was calculated at 573 feet. The calculations were on the assumption that the ball traveled completely over the left-center-field roof. However, subsequent investigation indicated that the ball landed on the back of the roof before bouncing out into the night. Also, when Dave Kingman launched his wind-aided blow in Chicago’s Wrigley Field on April 14, 1976, "The New York Times" somehow concluded that it had flown 630 feet. It has been confirmed that the ball struck against the third house beyond Waveland Avenue, which is situated about 530 feet from home plate. Yet another claim (by the "Guinness Book of Records"), has a minor league player by the name of Roy Edward "Dizzy" Carlyle having hit one 618 feet at Emeryville Ball Park, CA on July 4, 1929. Mark McGwire hit several home runs over 500 feet and one over 540 and his is measured accurately every time he hits one. I know I didn’t cover everything but I hope I covered enough to satisfy you. Also, Mantle's home run off the facade at Yankee Stadium on May 22, 1963 traveled between 370 to 374 feet and was between 115 to 117 feet high. If it was still going up like some people claim it would have traveled an estimated distance of 620 feet if left unimpeded. However, the reality is that the ball was already on its way down, and those reporting the trajectory were victimized by a common optical illusion. It is a scientific fact that if Mantle, or anyone else, had sufficient strength to hit a ball that was still traveling upward when it met the towering facade, he would also have enough strength to clear that same facade by a distance of at least 100 feet. In order for the ball to be rising at roof level, it would have to have been traveling at a lower angle than that which produces maximum distance. If Mantle had provided the same power or velocity, but had launched the ball at a higher and more efficient angle, it would have passed out of Yankee Stadium at a height of over 200 feet! Mantle hit the facade on two or perhaps three occasions, but never cleared it.

565 ft. mickey mantle.

THE FARTHEST BALL EVER HIT WAS BY THE GREAT BABE RUTH. THE ENDED UP GOING 626 FEET.

When there is a discussion on longest home runs ever hit, there is one great homer that is generally omitted. On 4/15/1961, Cincinnati Reds outfielder Wally Post hit a shot in St. Louis that traveled an estimted 569 feet. In the news article from the cincinatti papers, Stan Musial was quoted it was by far the longest homer he ever witnessed. Bob Nieman, a Cardinals out fielder who also witnessed Mantle's famed shot in Washington stated this was longer than Mantle's. It's a shame Post doesn't get recognition for his blasts. Post also during batting practice at Ebbets Field, hit one to left that went over the upper deck. As long as that one was, his shot in St Louis went further. The Mantle shot that traveled over 600 fett may be # 1, but I believe Post's may be the second longest.

pre-computer (gestimated) 634ft. Mickey Mantle post-computer (accurate) 540ft. Mark McGwire Either way you look at it M&M hit the longest home run.

harmon killebrew. longest homer ever hit at metropolitan stadium. question answered.

Babe Ruth hit the longest home run ever. 573 ft. in Detroit in 1920.

Trey Ellis hit the longest home run back in 2000 as a 10 year old. He hit this ball so far it landed on a train and got carried for 5 miles and then fell off. So ladies and gentlemen that is the longest homer ever hit.

trey ellis didn't hit the ferthest. Brett Brown did trey ellis is a lying sac.

Mickey Mantle (former) 634ft Ryan Howard (current) 515ft

The longest actual homerun ever hit was by Josh Gibson. Gibson slugged one over the third deck next to the left field bullpen in 1934 for the only fair ball hit out of Yankee Stadium. A boy picked up the ball some 715 feet away from home plate. In seeing where the ball first landed, that distance was also measured at 649 feet. That boy was my grandfather who told the story until he died and I still have that ball that Josh Gibson autographed for him.

The longest actual homerun ever hit was by Josh Gibson. Gibson slugged one over the third deck next to the left field bullpen in 1934 for the only fair ball hit out of Yankee Stadium. A boy picked up the ball some 715 feet away from home plate. In seeing where the ball first landed, that distance was also measured at 649 feet. That boy was my grandfather who told the story until he died and I still have that ball that Josh Gibson autographed for him

I don't know but you probably should find out somewhere else. Doesn't seem like anyone on here really knows for sure.

nmjh

I think it was Mickey Mantle and didn't he hit it out of Yankee Stadium?

The longest home run ever hit was by Mickey Mantle with a towering 610 foot home run.

Who hit it? Wow. I thought he was just a first base man.

The longest and hardest home run I ever saw personally was Sammy Sosa's rocket shot off Greg Maddux. The ball went 471 feet and I was about 75 feet from where it hit. It was still rising. It could have gone further. http://findarticles.com/p/articles/mi_hb5273/is_200109/ai_n20707279

Kenny Gabbard hit one in reds stadium over the river in 2004, it was estimated to be 747 feet.

Mickey Mantle hit a 610 ft blast which is the furthest in the mlb.

People have hit home runs with a bunt, but that was because the defense made errors all over the place. So it probably just counted as an error, not a home run.

Mickey Mantle hit 565 ft. homer on Grifth field in Washington.

Mickey Mantle-5/22/63, 734 feet at Yankee Stadium against Kansas City Athletics left-handed pitcher Bill Fischer

Mickey Mantle when he cracked at ball 737 ft. in yankee stadium it was believed to be the first home run to leave yankee stadium but (no suprise) red sox fans still say that it was nowhere close. (It was at the tip of a was getting ready to go into the parking lot but the wall just tipped it!

whats the longest homerun and by who you ask..... i have a good answer for you.... :) all of you.... I recently aquired an OFFICIAL 2006 Topps Sterling 5 piece games used baseball card.. A 1/1 card of MICKEY MANTLE !!! which should shedd some light on the subject... on the front.. the first piece looks really weird a factory error (intentional?), all five pieces form out 734FT and just below that it says the longest home run in baseball history. on the back it lists mickey mantle's top 5 homeruns and their distances..... 1. 734 Ft. in 1963 Yankee Stadium 2. 660 Ft. in 1951 3. 650 Ft. in 1953 at Briggs Stadium 4. 643 Ft. in 1960 at Tiger Stadium 5. 630 Ft. in 1953 at Yankee Stadium Unaware of these homeruns I started doing research... i found answers at www.themick.com , if you click the middle picture it tells you about mickey mantles ten longest homeruns in great detail..... I think the answer is clear... even if mantle's number one ball never gets fully recognized, I say to those who question the furiousity of his blast to do your own math cause I think he was short changed.... that homerun listed second was hit in the air no obsticals by mickey mantle when he was just 19 years old! so.... anyways, i think i've found the answer to your question... bring on a hard one... LoL :)

www.themick.com

Its ubsurd to think Mantle ever hit a ball close to 550 feet let alone 600. If monsters like mcguire, Sosa,Canseco,and Bonds cant do it, then Mick wasnt even close. Lets get real here.

Mickey mantle 565 ft

FUTURE STAR ANTHONY LOHR WILL HIT ONE.....MY GUESS ANOTHER ZIP CODE

me 1850.5 inches in my backyard i beat my old record

There aren't measurements to tell to confirm or deny the Mantle stories. But there is a lot of useful information at www.hittracker.com that make a compelling case between man and myth when it comes to these alleged 600 - 700 plus foot blasts.

i agree it mantle,but the distance is not very accurate. There is too many versions of the story, Ive heard that it cleared yankee stadium, others say it hit the top but still rising. Whatever the case i belive that it was mickey mantle but i wont a definite answer, but NObody will ever know really how far it went.

634 by Joe Dimaggio