Popsugar Entertainment Avengers Endgame Longest Marvel Movies Wondering Which Marvel Movie Is The Longest? We've Got Your Answer 4 March 2019 by Amanda Prahl View On One Page Photo 12 of 20 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 12 Iron Man 3 (2013) Runtime: 2 hours and 11 minutes Previous Next Start Slideshow Avengers EndgameCaptain MarvelMarvelMovies