If you’re planning a Disney World trip, there’s one number you should be paying attention to more than anything else right now: 40 inches.
It doesn’t sound like much, but it completely changes what your trip looks like.
That’s because some of Disney’s biggest attractions all sit right at that exact height requirement—and now, with Big Thunder Mountain Railroad joining that lineup again, the list feels more complete than ever.
The Rides That Define the 40-Inch Tier
Once you hit 40 inches, you unlock a group of attractions that really define modern Disney World.
We’re talking about:
- Rise of the Resistance
- Tower of Terror
- Star Tours
- Mission: SPACE
- Test Track
- Soarin’
- Tiana’s Bayou Adventure
- Big Thunder Mountain Railroad
These aren’t secondary rides. These are the ones people plan their day around.
A Better Flow Between Parks
One of the biggest advantages of this height tier is how it spreads across the parks.
You’re not stuck in one place trying to find enough to do.
Instead, each park gives you at least one—or several—major attractions that fit this category. That creates a better flow to your trip, especially if you’re park hopping or trying to balance your days.
It also helps avoid that feeling of “we can’t ride anything here,” which can happen at lower height levels.
Magic Kingdom Gets a Boost
Magic Kingdom, in particular, benefits from this.
With Big Thunder Mountain Railroad back in the mix at 40 inches, it adds another ride that fits perfectly alongside Tiana’s Bayou Adventure.
That gives the park more variety for guests who want something a little more exciting without jumping to the most intense rides at Disney World.
EPCOT and Hollywood Studios Carry the Momentum
EPCOT might be the most underrated park at this height level.
You’ve got Test Track for speed, Soarin’ for a more relaxed but immersive experience, and Mission: SPACE if you want something more intense.
Then you head to Hollywood Studios, where the lineup gets even stronger.
Rise of the Resistance alone can anchor your entire day, and Tower of Terror adds a completely different kind of thrill.
The Role of the 38-Inch Rides
Before guests get there, the 38-inch rides play a huge role.
Slinky Dog Dash and Seven Dwarfs Mine Train are often the first “big rides” kids try. They’re smooth, fun, and just intense enough to feel like a step up.
They help bridge that gap so the jump to 40 inches doesn’t feel overwhelming.
Why This Matters More Than You Think
This isn’t just a random grouping of rides.
It’s a clear progression.
Disney has created a system where once you hit 40 inches, you’re fully stepping into the main experience of the parks.
And now, with Big Thunder Mountain Railroad back and aligned with that same requirement, that system feels more complete.
It’s one of those small details that ends up shaping your entire trip.
