'Avengers: Endgame' is reportedly over 3 hours long and our butts are already sore

Prepare your butts! Avengers: Endgame is gonna be one long-ass movie.

As revealed by AMC (and seemingly confirmed by Fandango), the final installment of the Avengers franchise will clock in at 3 hours and 2 minutes, making it the longest film in Marvel Cinematic Universe history. Disney has yet to officially confirm the news, but Mashable has reached out for comment.

The reportedly gargantuan runtime bests Infinity War's 149 minutes from last year, and changes Endgame's duration status from "reasonable movie length" to "longer than the SAT."

The three-hour length was first discussed by Endgame directors Anthony and Joe Russo in an interview with Collider early last month.

"Again, this is a culmination film of 22 movies, it’s a lot of storytelling to work into it," Joe Russo noted.

"Emotion is an intrinsic part of that to us. When you have to tell a really complicated story and you want strong emotional moments with the characters, it just requires a certain amount of real estate. This one, in particular, feels like three hours worth of real estate.”

This Tweet is currently unavailable. It might be loading or has been removed.

As pointed out by Business Insider in this handy-dandy chart, the more characters, the longer the movie -- and while that math carries in theory, fans are already questioning how it will fare in practice.

This Tweet is currently unavailable. It might be loading or has been removed.

This Tweet is currently unavailable. It might be loading or has been removed.

Of course, if the pacing is well managed and the story worth telling, then plenty of fans will be more than happy to endure the long showings.

This Tweet is currently unavailable. It might be loading or has been removed.

This Tweet is currently unavailable. It might be loading or has been removed.

The good news? Endgame may have a lot of loose ends to tie up, but with this runtime it's got more than enough time to cover everything -- right down to the dusty little details.

Avengers: Endgame is in theaters April 26.