The runtime for Avengers: Endgame according to reports is set at 3 hours and 2 minutes, which means Endgame will definitely be the longest installment in the Marvel Cinematic Universe.
For comparison, Avengers: Infinity War had a runtime of 2 hours and 29 minutes, while Avengers: Age of Ultron came a few minutes shy of that, at 2 hours and 21 minutes.
In an interview with Collider, producer Kevin Feige tried to clear any worries that the movie would feel overly long.
“It’s gonna be the exact running time that the movie needs to be,” he said. “I think there’s a lot of story in that movie and a lot of characters in that movie … Some movies can be 90 minutes and feel like they’re four hours. And some movies can be three and a half hours and feel like 90 minutes.”