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What to watch before Avengers: Doomsday

Avengers: Doomsday is scheduled for release in the US on 18 December 2026. If you can't watch everything first, watch the 20 titles below, about 47 hours. They introduce the teams and worlds named in the film's published premise, plus the Avengers films that set up the current saga.

Last updated . Published by AUSSIE-AI LTD. How the order is decided

What the published premise tells us

Wikipedia summarises the published premise like this: heroes from three universes come together, namely the Avengers, the Wakandans and the New Avengers from the main universe, the Fantastic Four from theirs, and the X-Men from the universe of the earlier Fox films. Nothing beyond that is covered here, and nothing in this guide spoils any released film.

The route, in release order

TitleTypeYearRuntimeWhy it is on the route
Iron ManFilm20082 h 6 minStarts the series and introduces Tony Stark, a lead all the way to Endgame.
ThorFilm20111 h 54 minIntroduces Thor and his brother Loki, the villain of The Avengers.
Captain America: The First AvengerFilm20112 h 4 minIntroduces Steve Rogers and the Tesseract that drives The Avengers.
The AvengersFilm20122 h 23 minAn Avengers film.
Captain America: The Winter SoldierFilm20142 h 16 minIts fallout reshapes the team ahead of Age of Ultron and Civil War.
Guardians of the GalaxyFilm20142 h 2 minIntroduces the Guardians and Thanos's family, all central to Infinity War.
Avengers: Age of UltronFilm20152 h 21 minAn Avengers film.
Captain America: Civil WarFilm20162 h 27 minSplits the team, and Infinity War opens with that split.
Doctor StrangeFilm20161 h 55 minIntroduces Doctor Strange and the Time Stone, both key to Infinity War.
Thor: RagnarokFilm20172 h 10 minIts final scene leads straight into the opening of Infinity War.
Black PantherFilm20182 h 14 minIntroduces Wakanda, a main setting of Infinity War.
Avengers: Infinity WarFilm20182 h 29 minAn Avengers film.
Ant-Man and the WaspFilm20181 h 58 minTakes place alongside Infinity War and leads into Endgame.
Captain MarvelFilm20192 h 4 minIntroduces the hero Nick Fury calls on at the end of Infinity War.
Avengers: EndgameFilm20193 h 1 minAn Avengers film, and the close of the Infinity Saga.
Loki, season 1Series20214 h 45 minIntroduces the multiverse the current saga is built on.
Black Panther: Wakanda ForeverFilm20222 h 41 minWakanda's current leaders are part of Doomsday's published line-up.
Deadpool & WolverineFilm20242 h 8 minSet in the X-Men's universe (Earth-10005), which Doomsday's published premise names.
Thunderbolts*Film20252 h 7 minDoomsday is set fourteen months after it, per its published premise.
The Fantastic Four: First StepsFilm20251 h 54 minIntroduces the Fantastic Four, part of Doomsday's published line-up.
Total46 h 59 min20 titles

Each title is also marked essential in the Marvel planner, where you can tick them off and see the time left. Switch on "Essentials only" there to see just this route.

If you have more time

In release order, add the films that fill in each team's story: the Captain America and Ant-Man films, the Doctor Strange and Spider-Man films, and the Disney+ series that interest you. The X-Men films behind the X-Men's return are in the X-Men planner.

If you have less time

Keep the four Avengers films, Thunderbolts* and The Fantastic Four: First Steps. The film's premise names both of those teams, and both films came out in 2025.

Questions people ask

When does Avengers: Doomsday come out?

It is scheduled for 18 December 2026 in the US, according to Wikipedia and Wikidata. Dates can move, and this page updates when the sources change.

Do I need to watch the Disney+ series before Doomsday?

Only Loki's first season is on the route, because it introduces the multiverse the whole saga is built around. The other series are optional.

How long is Avengers: Doomsday?

No final runtime has been published. Reports before release put it at about 165 minutes, but that is not confirmed, so the planner does not count it.

Sources