How Old Was Dylan O'brien In Maze Runner

Let’s be honest: the only thing more confusing than the Grievers in The Maze Runner is figuring out how old its star, Dylan O’Brien, actually was when he first ran through those concrete walls. Was he a fresh-faced teen? A grizzled 30-year-old with a fake ID? Spoiler: the answer is weirder and more adorable than you think.

When Dylan started filming the first movie in 2013, he was 21. That’s right—this supposedly “teenage” hero of the Glade was legally old enough to drink a beer in the United States (and probably needed one after reading the script). His character, Thomas, is supposed to be around 16 or 17 in the books. So Dylan was playing a kid while already worrying about his rent and car insurance.

But here’s the mind-bender: he was actually 17 when he first auditioned for the role. Yes, the casting gods had a sense of humor. He went in as a high-school-aged nobody, and by the time they actually rolled cameras, he’d aged into a full-blown college sophomore. The irony is so thick you could cut it with a Grievers’ blade.

The Prehistoric Teenager of the Glade

If you watch the first movie now, Dylan’s face is a masterpiece of genetic confusion. He looks like a 33-year-old man wearing a 15-year-old’s Halloween costume. That jawline wasn’t sculpted by the WICKED corporation—it was chiseled by years of drinking coffee and paying taxes.

In Maze Runner, Thomas has no memory of his past. But Dylan’s past is hilarious: at 21, he was already three years older than his character’s upper age limit. That means he was older than a senior in high school, yet he had to act terrified of a giant metal spider-bot. I’d be terrified too, but mostly because my lower back hurts just looking at those stone walls.

How Old Was Dylan O'brien When He Filmed The Maze Runner at Doreen

The Great Aging Timeline

Let’s break it down like a math problem that gives you hives. The first movie came out in 2014. Dylan was born in 1991. So during filming in 2013: 21. The sequel, Scorch Trials, hit theaters in 2015, and Dylan was 23. By the time Death Cure rolled around in 2018, our boy was a wizened 26. That’s a whole decade older than the character who’s supposed to be 16.

But here’s the kicker: Kevin Zegers, who plays a Glader in Death Cure, was 33 during filming. So the “teenagers” in this dystopian nightmare ranged from 20 to 33. They weren’t escaping a maze; they were escaping middle management.

Why This Matters (It Really Doesn’t, But It’s Fun)

You might ask, “Why should I care about Dylan O’Brien’s age?” The answer: because it’s hilarious to imagine a 21-year-old actor trying to pass as a confused teenager while knowing he’ll soon need to file his taxes. It’s like watching a golden retriever puppy trying to climb into a small cardboard box—charming but fundamentally inaccurate.

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Also, it’s a secret weapon for casting directors. Need a believable teen? Hire a 23-year-old who can cry on cue and doesn’t actually need a permission slip. Dylan brought that sweet, youthful energy to the role, despite having an apartment lease and a 401(k) plan for his sock collection.

Surprising Fact: He Almost Didn’t Get the Role

Here’s a juicy, barely-relevant tidbit: Dylan originally auditioned for the part of Newt, not Thomas. But the director, Wes Ball, took one look at his audition tape and said, “Nah, you’re the main guy.” So a 17-year-old Dylan almost got stuck playing the sad, limping British kid. Instead, he got the lead—and the responsibility of making a 21-year-old act like a 16-year-old who just lost all his memories. That’s the acting equivalent of patting your head and rubbing your stomach while singing Bohemian Rhapsody.

The Glade’s Actual Oldest Resident

Let’s not forget that Dylan, at 21, was practically a senior citizen compared to some of his castmates. Thomas Brodie-Sangster, who played Newt, was 24 during the first film—and he looked like he was 12. So you had a 24-year-old playing a 16-year-old, and a 21-year-old playing a 17-year-old. The math is a disaster, but the chemistry was pure gold.

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If you really want to blow your mind, consider that Kaya Scodelario, who played Teresa, was 22 during the first movie. So the entire love story was between two actors in their early 20s pretending to be hormonally confused teens. No wonder the maze felt so stressful—they were all overdue for a mortgage payment.

What Did We Learn?

Nothing. Absolutely nothing. But you now know that Dylan O’Brien was 21 when he first entered the Glade, and that’s the kind of trivia that makes you a legend at parties. Or at least the kind of person who makes everyone groan. Which is its own kind of power.

So next time you rewatch The Maze Runner, don’t just marvel at the special effects. Pause the screen, squint at Dylan’s flawless skin, and whisper to yourself: “This man was legally able to rent a car in some states.” Then let the existential awkwardness wash over you like a soothing, age-inappropriate wave.