By John 
From my own experience of traveling the world, the answer to how long it might take really depends on how you define the journey—because technically, with today’s technology, you could be anywhere on Earth in under 2 hours if a rocket-level option existed for civilians, while at the other extreme, a slow, immersive route stretching over 10 years isn’t unrealistic if your goal is to truly visit every country without rushing; I’ve met people attempting it at a fast, almost world-record-setting pace, circling the globe in about 79 days, yet others prefer a bicycle adventure or a more casual, comprehensive multi-country exploration that often takes several years, and somewhere between those extremes lies what most travelers actually experience—a flexible timeline shaped less by distance and more by curiosity, budget, stamina, and how deeply you want to connect with each place.
This is how long it would take you to travel round the world – on foot, by car, by plane or space station!
When I first started to seriously think about travel around the world without stopping, I realized the question isn’t just how long it would take, but what version of Earth you imagine—because the real Earth, the fifth largest planet in the Solar System, isn’t exactly built for neat calculations, even though its circumference is often quoted as 40,070 km or 24,898 miles, and while these measurements are based on data gathered from orbiting spacecraft, including calculations of the radius at about 6,378 km or 3,963 miles and a diameter of 12,756 km or 7,926 miles, the reality of moving across it feels far less precise than those numbers suggest.
I remember staring at an image captured during Apollo 10 on 18 May 1969, credited to NASA and later restored by Toby Ord, and thinking how clean and smooth the planet looks from space; yet interestingly, those tidy figures only really apply at the equatorial level, where travel assumes a perfect sphere, while in truth the polar radius is slightly less, closer to 6,357 km or 3,950 miles, which subtly changes the math depending on how you imagine circling the globe.
For practical purposes, when people talk about going around the world, most travel plans quietly assume something far simpler: that you could follow the footsteps of Phileas Fogg, tracing a fictional journey along the equator, mostly for the ease of calculation, even though real routes zigzag through borders, weather systems, and the occasional missed connection that no equation ever accounts for.
To make the idea even remotely workable, I’ve found it helps to assume an alternate version of Earth—one that’s entirely solid, almost like replacing the oceans that cover about 70% of its surface with continuous, walkable, drivable, ground, because otherwise any attempt to compare walking, driving, flying, or even orbiting becomes more about logistics than distance.
Once you picture that simplified planet, the timelines start to feel more tangible: on foot, you’re looking at years of steady movement; by car, months if you maintain consistency; by plane, mere days of cumulative flight time; and from a space station, you’d circle the planet in minutes per orbit, yet somehow feel the least connected to the act of travel itself, which is why, despite all the math and models, the real answer always ends up depending on how you choose to experience the world rather than just how fast you can move across it.
How long to walk around the Earth
The idea to walk around the world sounds romantic until you start breaking it down like a seasoned traveler would—taking an adult with an average walking speed of about 4.82 km/h or 3 mph, you’re looking at roughly 8,313 hours and 20 minutes, which lands just shy of a full year of non-stop walking, and from my own long-distance treks, I can tell you that even a few days back-to-back changes your perception of time, let alone something this extreme.
What fascinates me is how the current world-record holder in speed-walking the 50 km, Yohann Diniz, once crossed that distance in just 3 hours, 32 minutes, and 33 seconds, which makes you wonder—if someone could somehow keep that speed and walk around the Earth, they’d theoretically finish in about 2,839 hours, a number that feels almost unreal when compared to normal human endurance.
But then reality steps in, because the longest recorded time a human has stayed awake without sleeping is about 264 hours, and even that required recovery, so stretching movement over thousands of hours without proper rest becomes less of a physical challenge and more of a biological impossibility.
I’ve also compared this with faster modes—like driving—and even if you could drive around the equator at a constant speed of 100 mph or 160 kph, you’d still need about 250 hours, which sounds manageable until you factor in fatigue, navigation, and the unavoidable need for a long sleep, something no calculation can truly eliminate.
How long to fly around the Earth
Long before modern aviation blurred the meaning of distance, Jules Verne imagined a daring protagonist in Around the World in Eighty Days completing a global journey, and what’s striking is that this vision came nearly 30 years before the Wright brothers built the first airplane that actually flew—a reminder that fiction often outruns reality, even in travel.
Today, stepping onto commercial passenger planes, cruising at a speed of about 575-600 mph or 925-965 km/h, you could technically fly around the Earth in less than 42 hours, assuming perfectly timed connections and no delays—something I’ve chased in multi-leg trips, only to realize that the math is always cleaner than the experience.
There’s also a strange historical twist: if you could somehow avoid every obstacle that once imprisoned or drugged Phileas Fogg and his friends, modern engineering suggests a continuous travel loop around the Earth in under 24 hours isn’t fantasy anymore—you’d just need to cover the 40,070 km in a single day at roughly 1,670 km/h, already faster than the speed of sound (1,225 km/h or 761.2 mph).
That’s where experimental tech steps in—projects linked with NASA exploring supersonic jet journey concepts, including what many consider the fastest jet-powered aircraft ever created, the NASA X-43, which recorded speeds of Mach 9.3, or multiple times the speed of sound, making global circumnavigation feel almost trivial in theory.
The first X-43A hypersonic research aircraft, modified from a Pegasus booster rocket, was carried aloft by an Nb-52B carrier aircraft on June 2, 2001, with NASA imagery often credited to Getty Images, and at a blistering speed of 11,484 km/h (7,136 mph), it hinted you could go around the world in under 3.5 hours, though being an uncrewed aircraft that was destroyed after it crash-landed in the 2000s, it never became a practical travel option despite the X-43s short existence.
Even more grounded machines like the Mikoyan-Gurevich MiG-25 fighter jet, which first flew in 1970, show what’s possible—certain versions of the MiG-25 Foxbat, including those used by the Syrian Air Force and still used today, are capable of reaching Mach 3.2, enough to go around the Earth in over 10 hours, but if anything were truly capable of travelling at the speed of light—about 300,000 km per second (186,000 miles/sec)—you’d zoom around the globe seven times a second, turning the entire concept of distance into something almost meaningless.
Famous around-the-world trips
Whenever I reflect on iconic global journeys, my mind goes back to Jules Verne, whose 1872 book didn’t just tell a story—it inspired many to rethink what travel around the world could mean, sparking real-life circumnavigations that echoed fiction, even though some of the boldest attempts happened before imagination caught up with reality.
Take the daring era between 1577 and 1580, when Sir Francis Drake completed a staggering 1,018 days voyage around the globe, not just as an expedition but also a strategic raid on Spanish ports and settlements—a reminder that early global travel wasn’t about leisure, but survival, ambition, and power.
In contrast, the current world record holder for the fastest circumnavigation on foot, Serge Girard, took 434 days to travel 26,245 km, and having attempted smaller endurance routes myself, I can say that maintaining that level of consistency is less about speed and more about resilience.
Then there’s aviation history—back in 1995, the Concorde made history as it flew around the Earth in just 31 hours and 27 minutes, carrying 98 passengers and crew, compressing what once took years into something you could almost measure in a single day.
From space, the perspective shifts entirely: an orbital sunset, as seen from the International Space Station on 24 June 2023, captured by NASA, shows how being outside the atmosphere changes everything—the station can travel the circumference of the Earth in about 90 minutes, meaning within 24 hours, the crew on board witnesses around 16 sunrises and sunsets, while the earliest known circumnavigator beyond Earth, the Moon, completes its regular journey in about 27.3 days.