Walk around the Earth in one lifetime
An average person walks about 7,000 steps a day: the commute, the supermarket laps, the pacing during phone calls. Nobody notices it happening.
5 km a day145,000 km lifetime180 pairs of shoes
The question: Over 80 years, how many times around the Earth would your feet take you — and how many pairs of shoes would that wear out?
the result
145,000 km — 3.6 laps of Earth
One step ≈ 70 cm. Earth's circumference ≈ 40,000 km. A pair of shoes lasts about 800 km.
Work it out
- 7,000 × 0.7 m ≈ 5 km per day.
- × 365 ≈ 1,800 km per year.
- × 80 ≈ 145,000 km in a lifetime.
- ÷ 40,000 km ≈ 3.6 laps of the planet.
- Shoes: 145,000 ÷ 800 ≈ 180 pairs.
About 145,000 km — more than three laps of the planet, wearing out roughly 180 pairs of shoes.
What it teaches
Small daily habits multiplied across a lifetime are not small. Five kilometres a day sounds modest; 3.6 trips around the Earth does not.