At first, the idea sounds impossible. After all, the Earth is covered by oceans, mountain ranges, deserts, and political borders. How could anyone walk all the way around it?
Surprisingly, the answer is not a simple no. Under the right definition, it may actually be possible to walk around the world — though doing so would be far more complicated than simply putting one foot in front of the other.
The question turns out to be part geography, part logistics, and part endurance challenge.
What does “around the world” actually mean?
The first challenge is defining the phrase.
If it means literally walking every mile around Earth’s circumference without interruption, oceans make that impossible.
Earth’s circumference is about 40,075 kilometers (24,900 miles), but much of that route would cross water.
In practice, “walking around the world” usually means completing a form of circumnavigation by foot, using walking as the primary mode of travel while crossing oceans by ship or plane where necessary.
Under that definition, the challenge becomes much more realistic.
People have actually done it
Several explorers have completed journeys considered walking circumnavigations.
Perhaps the most famous is Karl Bushby, who began an extraordinary project called the Goliath Expedition in 1998, attempting to walk around the world with minimal transport assistance.
Others have completed similar long-distance global walks under different rules.
These journeys often take many years and involve crossing multiple continents.
Their existence alone suggests the concept is not purely theoretical.
The geography challenge
Even without oceans, geography makes a continuous route difficult.
A walker would encounter:
mountain ranges such as the Himalayas
deserts such as the Sahara
Arctic or sub-Arctic regions
vast stretches with little infrastructure
Some routes would need major detours.
The challenge resembles solving a giant geographic puzzle, balancing land access, terrain, and political borders.
In some ways, it raises the same kind of route logic questions as speculative geography explored in stories like The Wonderful Wizard of Oz — though with much more practical consequences.
Borders may be harder than distance
Oddly, walking the distance may be easier than crossing borders.
A global walking route could require passing through dozens of countries, each with its own visa rules, conflicts, and restrictions.
Some land routes are effectively blocked by geopolitics.
Even where passage is legal, timing and bureaucracy can become major obstacles.
This may be the greatest reason why walking around the world is harder than simply walking a very long distance.
How far would you actually walk?
In practice, a walking circumnavigation would likely exceed Earth’s circumference significantly because of detours.
Some estimates suggest a practical route could involve 30,000 miles or more.
At 20 miles per day — a demanding but possible pace — that alone could require over four years of walking, not including rest days, border delays, illness, or weather.
Realistically, many such expeditions take much longer.
Could you do it without crossing oceans?
This is where the answer becomes mostly no.
Because oceans interrupt land continuity, a true uninterrupted pedestrian loop around Earth is impossible without some form of sea crossing.
Unless one imagines extreme scenarios involving ice routes or future infrastructure, water makes literal full-foot circumnavigation unattainable.
But if sea crossings are allowed while walking remains the primary mode of travel, the challenge becomes possible.
The endurance factor
Distance alone does not capture the difficulty.
Walking for years requires enormous physical and psychological resilience.
Injury, weather, loneliness, logistics, and financial support all become part of the challenge.
It is as much an endurance expedition as a geographic one.
This helps explain why only a small number of people have attempted it.
Could someone walk around the world today?
Yes — under accepted expedition definitions, it is possible.
Difficult, expensive, and extraordinarily rare — but possible.
Modern navigation, global infrastructure, and better route planning arguably make it more feasible today than in the past.
Still, it remains one of the most ambitious journeys a person could attempt.
Why the question fascinates people
Part of the appeal is that the question sits between imagination and reality.
It sounds almost absurd at first, yet it leads to real questions about geography, human limits, and exploration.
It also reminds us how large and interconnected the world is.
Much like asking whether humans could reach Mars or what lies inside a black hole, the question captures curiosity because it tests what seems possible.
Key takeaways
Walking literally around Earth without interruption is impossible because of oceans.
But a walking circumnavigation using sea crossings is possible.
Several explorers have completed or attempted such journeys.
Geography, borders, and endurance make the challenge extraordinarily difficult.
Under practical definitions, it is possible to walk around the world — just not entirely on foot alone.
