The Holiday Paradox: Why Vacations Fly By but Feel Long in Memory
By Dr. Katie Blake, PhD | Social & Cultural Psychologist, Travel Psychology Expert
I once took a road trip through some of the most spectacular public lands in the American West: Yellowstone, Grand Teton, Arches, Mesa Verde, Dinosaur National Monument, and Flaming Gorge.
While I was on that trip, the days seemed to disappear. One park blurred into the next, and suddenly it was time to head home. But looking back now, that road trip feels enormous in my memory, far bigger than the actual number of days it took. It holds more than whole months of ordinary life.
If you've ever had that experience, you've met what some psychologists and writers call the holiday paradox: a great trip flies by while you're on it, then feels long when you look back. Broadcaster and psychology writer Claudia Hammond gave it that name in her book Time Warped, and once you know the psychology behind it, you can start using it to make your trips, and maybe even your ordinary weeks, feel richer in memory.
Your Mind Keeps Two Different Clocks
The holiday paradox makes sense once you realize that we judge time in two different ways.
The first is prospective time: your sense of how fast time is moving right now, while you're living it. This is the clock that makes a dentist appointment drag and a great dinner with friends vanish.
The second is retrospective time: your sense, looking back, of how long a stretch of your life lasted. This is the clock you consult when you say "that summer felt endless" or "where did this year go?"
Most of the time, the two clocks roughly agree, so we never notice they're separate. Travel is one of the few experiences that pulls them dramatically apart.
Psychologists Richard Block and Dan Zakay showed in a 1997 meta-analysis that these two kinds of judgments really do behave differently. Later work by Block, Peter Hancock, and Zakay, pooling 117 experiments, found a striking pattern. When people's minds were busier, they judged time as passing more quickly in the moment, yet longer in hindsight. In their account, prospective judgments depend mostly on attention, while retrospective ones depend mostly on memory: how much changed and got stored along the way.
As I see it, that single finding explains most of the holiday paradox. A full, busy, novel day on the road keeps your attention away from the clock, so it flies. And it leaves behind a dense cluster of memories, so it feels long once it's over.
Why a Great Trip Flies By While You're on It
We all know the saying that time flies when you're having fun. Psychology suggests it's true, though the reasons are more interesting than the cliché.
Part of it is attention. When you're absorbed in something, standing at an overlook or working out which trail to take, you're simply not monitoring the clock. Prospective time is built partly from how often you check in on it. Stop checking, and hours slip by unnoticed.
Motivation plays a role too. In a 2012 study in Psychological Science, Philip Gable and Bryan Poole found that positive states with high approach motivation, the eager, leaning-in feeling of wanting to go toward something, made time feel shorter. Pleasant states with low approach motivation didn't have the same effect. I'd argue a road trip is practically built on approach motivation: the next park, the next view, the next bend in the road.
And there's a fun twist. In a series of seven studies published in 2010, also in Psychological Science, Aaron Sackett and colleagues found that the relationship runs both ways. When people were led to believe that time had passed unexpectedly quickly, they rated tasks as more engaging, noises as less irritating, and songs as more enjoyable. Their explanation is that we use the "time flies" rule of thumb to read our own experience: time flew, so I must have been having fun.
So when you reach the end of a trip and think "I can't believe it's over already," part of your enjoyment may come from that very feeling.
Why the Same Trip Feels Long Once You're Home
Now for the other half of the paradox. Why does a trip that vanished in the moment feel so large afterward?
Hammond's explanation, drawing on decades of memory research, is that one of the main ways we judge how much time has passed is by how many new memories we made along the way. A stretch packed with novel experiences leaves a thick layer of distinct memories. When you look back, your mind reads all that material as evidence that a lot of time must have passed.
The opposite is true of routine. In a 2003 paper in the Journal of Experimental Psychology, psychologists Dinah Avni-Babad and Ilana Ritov tested exactly this. Across four experiments and two real-world field studies, including one with people on vacation, they found that time spent in routine activities was remembered as shorter than the same amount of time spent in non-routine ones. Routine days blur together into one remembered unit. Novel days stay distinct.
This is also why ordinary life can seem to accelerate. A week of the same commute, the same desk, and the same dinner leaves very few distinct marks behind, so when you look back, it seems to have disappeared. Hammond has pointed to novelty as a key part of why time seems to speed up as we get older: in youth, nearly everything is a first, and later, far fewer things are.
Put the two clocks together and the paradox resolves. On a great trip, absorption and eagerness make time fly in the moment. Novelty fills your memory with distinct new material. So the very things that make the days disappear are the same things that make them loom large later.
Why My Road Trip Feels So Big in Memory
Looking back at that road trip through this lens, it was almost a perfect recipe for the holiday paradox.
Every stop was its own world. Yellowstone's geysers and steaming basins. The jagged wall of the Tetons. The red rock arches outside Moab. The cliff dwellings at Mesa Verde, built by Ancestral Puebloan people centuries ago. The wall of dinosaur bones at Dinosaur National Monument. The deep red canyon walls around Flaming Gorge. No two places looked or felt alike, and each one gave my memory a fresh, distinct chapter to file away.
I can still distinctly remember the sights and feel of driving into Dinosaur National Monument. The terrain was unlike anything I had ever seen, and I found myself feeling almost like I was inside the movie The Land Before Time, a childhood favorite.
That's exactly what the research would predict. A trip that strings together very different places creates natural boundaries in memory. Each new park acted like a new scene. Today, when I think back on that trip, it comes back as a series of distinct places, and that's a big part of why it feels so much longer than it was.
How to Make a Trip Feel Longer in Memory
You can't stop a great trip from flying by, and honestly, you wouldn't want to. That speed is part of the joy. But you can make it more likely that the trip feels rich and spacious when you look back. Here's how I translate the research for travelers.
Build in variety. Novelty is what fills retrospective time. You don't need six national parks to get the effect. Even within one city, a mix of neighborhoods, a day trip somewhere different, and a meal unlike anything you'd eat at home all create distinct chapters.
Watch out for vacation routines. Avni-Babad and Ritov's work suggests that routine compresses time in memory, and routines can creep in fast on a trip: the same café, the same beach chair, the same evening loop. Some of that is restful and good. If you notice every day starting to look the same, change one thing.
Mark the transitions. Moving between places, checking into a new town, crossing into a new landscape: these thresholds act as natural dividers in memory. If you're staying in one place, you can create smaller transitions with a half-day excursion or a deliberately different morning.
Pay attention on purpose. A memory has to be formed before it can stretch time later. Pausing for a minute to take in where you are gives your mind something solid to store.
Capture moments in a way you'll revisit. A few lines in a journal, a postcard written on the spot, or a souvenir tied to a moment can all help you return to those memories later. I wrote more about this in my piece on the psychology of souvenirs.
Balance novelty with rest. More novelty isn't always better. A trip with no downtime can leave you exhausted, and as I explored in my piece on why you can't relax on vacation, recovery matters too. The goal is enough variety to create distinct memories, with enough space to actually enjoy them.
And here's a bonus: the same principle works at home. If your weeks have started to blur together, adding small doses of novelty, a new walking route, a new recipe, a weekend somewhere you've never been, can help ordinary life feel a little less like it's slipping away.
A Short Trip Can Hold a Long Time
There's something comforting in the holiday paradox. It means the speed of a great trip is no reason for regret. The days that slipped through your fingers while you were living them haven't disappeared. They've gone somewhere: into memory, where they take up far more room than the calendar might imply.
That's how a road trip through Yellowstone, the Tetons, Arches, Mesa Verde, Dinosaur, and Flaming Gorge can feel, long after, bigger than whole seasons of ordinary life. It was two weeks, but it went by in a blink, and in memory it keeps going.
So the next time you find yourself on the last day of a trip, wondering where the time went, here's my answer as a travel psychologist: it went somewhere inside of you. And when you look back, it will likely feel like more time than it was.
Frequently Asked Questions
What is the holiday paradox?
The holiday paradox is the feeling that a good vacation flies by while you're on it, yet feels long when you look back. The term was coined by psychology writer Claudia Hammond in her book Time Warped. It happens because we judge time in two ways: how fast it seems to pass in the moment, and how long a period seems in memory.
Why does vacation go by so fast?
When you're absorbed, excited, and eager for what's next, you pay less attention to time itself, so it seems to move quickly. Research has found that positive states with high approach motivation, the feeling of wanting to move toward something, make time feel shorter.
Why do trips feel longer when you remember them?
One of the main ways we judge how much time has passed is by how many new memories we've formed. Travel is full of novel experiences, so it leaves behind many distinct memories. Research by Dinah Avni-Babad and Ilana Ritov found that routine periods are remembered as shorter than non-routine ones, which helps explain why novel trips feel longer in hindsight.
Why does time seem to speed up as we get older?
One leading explanation is novelty. When we're young, many experiences are firsts, which creates lots of distinct memories. As life becomes more routine, fewer new memories form, so years can seem to pass more quickly in hindsight.
How can I make a vacation feel longer?
Build in variety, notice when routines creep in, mark transitions between places, and pay attention to the moments you're in. Capturing memories in ways you'll revisit, like a journal or a postcard, can help too. Balance novelty with rest, since a trip with no downtime can leave you depleted.
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Katie Blake, PhD is a social and cultural psychologist, travel psychologist, and writer based in the USA. She is the publisher of The Journal of Travel Psychology and the founder of The Postcard Société. She works with individual travelers and leading travel and hospitality brands on psychology-informed experiences and campaigns. Available for media inquiries, expert commentary, podcast appearances, and brand collaborations — visit drkatieblake.com/press.