Marvel Marathon: The Longest MCU Movies Ranked by Runtime — Which Epic Reigns Supreme?

If you remember early Marvel days (I'm talking back when Edward Norton was still our Hulk and elves were the big problem in Thor), the movies almost felt brisk compared to today's runtime marathons. Those flicks clocked in well under two hours—just enough time for some origin story shenanigans and a couple fight scenes, then home in time for dinner. But fast-forward to now, and two hours is basically a warm-up lap for Marvel Studios.

We're deep into the era where superhero movies think they're The Godfather, and honestly, if you're a fan, you've probably gotten used to blocking out an entire afternoon just to keep up. Endgame, for example, blew right past the three-hour mark. And let's be real—if you stick around for the end credits (because of course you do), you're signing up for every last minute.

The ''long blockbuster'' trend is here to stay, and Marvel's never looked back. If you're wondering which MCU movies are longest—and what makes them worth your time (or why they desperately needed a tighter edit)—here's your quick guide:

The MCU's Most Epic Runtimes

• Guardians of the Galaxy Vol. 2 (2017) – 2h 17m: This sequel is where James Gunn flexed his ''I'm gonna make you cry about a tree'' muscles and dove deep into family drama. Not only do we meet Ego and Mantis, but pretty much every Guardian gets their turn in the therapy chair. Flashbacks, sibling reconciliations, Baby Groot hijinks—it's all in there. Did it need the extra time? Probably, considering how much emotional baggage they unpack.
• Avengers: Age of Ultron (2015) – 2h 21m: The MCU's most ''studio noted'' Avengers movie by far, thanks to a lot of behind-the-scenes arm wrestling. Marvel insisted on squishing in Thor's dreamy Infinity Stone subplot (which got chopped anyway), and it shows. Age of Ultron introduces Wanda, Pietro, Vision, and Ultron, and sets up Civil War, but the end result is the most uneven of the big Avengers flicks (and, not by accident, its lowest-rated on Rotten Tomatoes).
• The Avengers (2012) – 2h 23m: Remember when bringing together six heroes from different movies felt like a huge deal? This was the MCU's big crossover experiment, and Marvel made sure it didn't feel rushed. It's where all the groundwork pays off, and everyone—Cap, Iron Man, Thor, Hulk, Black Widow, Hawkeye—gets their moment. This was the first sign Marvel was comfy making audiences sit for a while.
• Captain America: Civil War (2016) – 2h 27m: Civil War is barely a Cap movie; it's basically Avengers 2.5 by another name. The roster is packed—returning heroes, new faces like Black Panther, Spider-Man, and Zemo. Marvel decided it was time to stretch the runtime so it could punch you in the feelings and show off its collection of costumed frenemies.
• Spider-Man: No Way Home (2021) – 2h 28m: Holland's third outing as Spidey crams in so much—multiverse villains, three different Spider-Men, and the magical fallout from Doctor Strange's career as Bad Choice Advisor. The extra-long runtime is mostly fan service (not complaining), but at least the film earns it, and you get a whopping 11 more minutes if you check out the ''More Fun Stuff'' cut, which is, well, more fun stuff.
• Avengers: Infinity War (2018) – 2h 29m: Not to be confused with Endgame, this is where Thanos finally gets off his space throne and ruins everyone's week. It's a crisscross of team-ups: Guardians, Avengers, Sorcerers, you name it. Service all those characters, and yeah, it adds up. Nearly two and a half hours feels justified, especially with that infamous ending.
• Guardians of the Galaxy Vol. 3 (2023) – 2h 29m: Gunn rounds out his trilogy by juggling flashbacks, present-day rescue missions, the fate of Rocket, needle drop after needle drop, and enough snappy dialogue to fill a miniseries. It's long, sure, but the pace keeps you anxious for the next disaster—plus, the soundtracks are still undefeated.
• Eternals (2021) – 2h 37m: Here's where Marvel decided to try an epic that spans millennia and introduces a whole new cast—plus cosmic mythology—practically from scratch. The runtime is ambitious, if a bit of a slog, but they needed to fit in world-building, a lot of time jumps, and enough lore to fill an encyclopedia. Did they stick the landing? Not really, judging by box office and fan response. But they sure had room to try.
• Black Panther: Wakanda Forever (2022) – 2h 41m: The heaviest film in the lineup, both emotionally and in terms of the clock. Wakanda Forever juggles saying goodbye to Chadwick Boseman, introducing Namor and Ironheart, and building up Shuri's new hero arc. It's the longest Phase Four film by a mile, and Marvel poured its heart out. Totally worth the run time.
• Avengers: Endgame (2019) – 3h 5m: The big one. Endgame is the only MCU film that sails past the three-hour mark—it's essentially the end of an era (unless you count Spider-Man: Far From Home, but come on, Endgame's the real finale). Between the Time Heist, callbacks, emotional curtain calls for nearly everyone, and a final battle that outdoes anything the studio had attempted, it never feels padded. Marvel earned that indulgence, there's just no other way to wrap up a saga this big.

''No other film studio has been able to create a shared universe as successful as the MCU.'' (Yeah, I know that's big talk, but...where's Universal's Dark Universe these days?)

So if you're lining up a Marvel rewatch marathon, block out a full calendar day—or two. These aren't your father's breezy comic book movies. And considering everyone keeps showing up (audiences and cameos alike), expect Marvel to keep measuring these things in hours, not minutes.