We’re in for the longest film in the franchise’s history next month when The Last Jedi arrives. Check out this article on IGN, looking at that running time, which as they point out, includes the credits (which will likely be about 25 minutes long).
Director Rian Johnson has confirmed that Star Wars: The Last Jedi will be the longest film in the franchise so far, coming in at 150 minutes (2 and a half hours) including credits.
The longest Star Wars film was previously The Revenge of the Sith at 140 minutes. The Force Awakens came in at a (relatively) slimmer 124 minutes.