​Longest home runs in HR Derby history: Complete list of All-Star event’s biggest tape-measure shots originally appeared on The Sporting News. Add The Sporting News as a Preferred Source by clicking here.The Home Run Derby is where power-hitting legends are made.AdvertisementAdvertisementAdvertisementNothing showcases a player’s blend of strength and a beautiful swing quite like the Derby, an event purely designed for superstars to mash baseballs the furthest distance they possibly can. Since the Home Run Derby was introduced ahead of the 1985 All-Star festivities, most of MLB’s most well-known home run hitters have taken the opportunity to constantly swing for the fences, from Ken Griffey Jr., Barry Bonds and Sammy Sosa, to Giancarlo Stanton, Aaron Judge and Pete Alonso.Over the many years of the event, a select amount of home runs have traveled distances you’d have to see to believe — including some baseballs gliding in the air for over 500 feet. The Derby has produced its share of so-called moonshots, one of the most entertaining aspects of the power showcase.MORE:Full list of Home Run Derby winners by yearEspecially in recent years, baseball-tracking technology has improved to the point that home runs can be measured with precision, giving fans a more accurate understanding of just how far their favorite stars just launched a pitch. While the distance of the dingers in the 2010s and 2020s are more verifiable, there were some tape-measure Derby shots in the decades prior that are believed to have traveled massive spans as well.AdvertisementAdvertisementAdvertisementHere’s a breakdown of the longest homers hit in the history of the Home Run Derby, including details on how Statcast has improved the science of tracking home-run length and a look at some of the most memorable shots in Derby history.The Statcast tracking era, which began in 2016, made home run distances much more accurate — so the Home Run Derby dingers since then are far more provable than prior years. However, even before then, estimations based on the straight-line distance from home plate to the baseball’s landing spot still gave fans an idea of home run length.While some numbers are more official than others, below is the list of the longest home runs hit in the history of the Home Run Derby.Distance (feet)PlayerYearBallparkDerby Winner524*Sammy Sosa2002Miller Park, MilwaukeeJason Giambi520*Sammy Sosa2002Miller Park, MilwaukeeJason Giambi520Juan Soto2021Coors Field, DenverPete Alonso519*Frank Thomas1994Three Rivers Stadium, PittsburghKen Griffey Jr.518*Josh Hamilton2008Yankee Stadium, New York CityJustin Morneau518*Sammy Sosa2002Miller Park, MilwaukeeJason Giambi518Trevor Story2021Coors Field, DenverPete Alonso517*Bobby Abreu2005Comerica Park, DetroitBobby Abreu514Pete Alonso2021Coors Field, DenverPete Alonso513Oneil Cruz2025Truist Park, AtlantaCal Raleigh513Aaron Judge2017Marlins Park, MiamiAaron Judge513Shohei Ohtani2021Coors Field, DenverPete Alonso510*Mark McGwire1998