The insane 59-hour marathon will begin at 10 a.m. on April 23 with 2008's Iron Man and continue in chronological order, including last month's Captain Marvel. It will culminate in a screening of Endgame one hour earlier than other public showings.
Endgame itself is set to be more than three hours long, so it'll be just under two-and-a-half days of solid movie-watching before fans get to see the final chapter. Here's hoping they're still awake for the big event.
This isn't the first time AMC has shown a Marvel marathon. In 2015, it showed "only" the 11 Marvel movies that were out at the time, finishing a 28-hour marathon with Avengers: Age of Ultron.
The marathon is showing at three cinemas in the US: AMC Lincoln Square 13 in New York, AMC River East 21 in Chicago, and AMC Metreon 16 in San Francisco. Tickets cost $125 and marathon-exclusive collectibles will also be available.