HitTrackerOnline.com documents every HR hit throughout the Major Leagues, noting the park, pitcher, speed off the bat, true distance... all those interesting things you're not totally thinking about in the moment as Desi starts into his trot and the crowd is going wild.
One thing HTO.com does with this information is maintain a list of the players with the longest average home runs. If you're wondering if Ian Desmond does at all well by this metric, consider his ranking and the players immediately before and after him:
2. Giancarlo Stanton - 415.3'
3. Ian Desmond - 413.1'
4. Mike Trout - 412.5'
Not bad for a shortstop, right?