iunderstanditnow
Interactive Distance Explorer
Distance is stranger
than you think.
Your brain is terrible at estimating distance. Let's fix that — with tools, comparisons, and the surprisingly wild numbers hiding in your daily routine.
How far can you go in 1 hour? — choose a mode
12 km
Walking at a comfortable pace covers ~5 km/h — that's roughly 60 average city blocks per hour.
A full day of walking
~50 km
A fit person walking continuously for 8 hours at 6 km/h covers about 48 km — roughly the distance from central Paris to Versailles and back.
A full day of cycling
~200 km
At a touring pace of 25 km/h for 8 hours, a cyclist covers 200 km — enough to cross an entire small country like Luxembourg in 30 minutes.
Your metro stair habit
~270 m/yr
Taking two flights of stairs twice daily adds up to over 270 vertical metres a year — nearly as tall as the Eiffel Tower, climbed entirely sideways through your commute.
10,000 steps = ?
~7.5 km
The famous "10,000 steps" goal equals roughly 7–8 km depending on stride length — about the distance across Manhattan island, east to west.
📍 Your Daily Distance Calculator
Find out how far you actually travel, and what it means for your body
1,000
7,500 steps
25,000
1
5 days/wk
7
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km per day
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calories burned
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km per year
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minutes walking
movement science
Did you know?
The human body evolved for walking — our ancestors covered 10–20 km per day as hunter-gatherers. Modern sedentary adults average just 3,000–4,000 steps daily. That's roughly a 70–80% reduction in movement compared to what our cardiovascular systems were designed for. Even adding one 20-minute walk per day closes a meaningful portion of this gap.
🪜 Stairs vs. Escalator — The Real Health Math
You take the metro twice a day. What does that decision actually add up to?
1
2 trips
8
Take the Stairs
Old school. Cardiac-approved.
✓ You picked this
Take the Escalator
Modern. Effortless. But at what cost?
✓ You picked this
—
extra cal/day (stairs)
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extra cal/year
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vertical m/year
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× Eiffel Tower/yr
How far is "far"? Landmark Scale
Famous distances, expressed in human walking time
transport comparison
The Movement Matrix
Every way to travel — ranked by effort, health impact, and daily practicality
| Mode | Speed (avg) | Cal/hr | Daily range (8h) | Health impact | Planet |
|---|---|---|---|---|---|
| 🚶 Walk | 5 km/h | 280 kcal | 40 km | Excellent | Zero CO₂ |
| 🏃 Run | 10 km/h | 600 kcal | 80 km | Very High | Zero CO₂ |
| 🚲 Cycle | 20 km/h | 400 kcal | 160 km | High | Zero CO₂ |
| 🛴 E-scooter | 20 km/h | 50 kcal | 160 km | Low | Low CO₂ |
| 🚌 Bus | 25 km/h | 40 kcal | 200 km | Minimal | Shared CO₂ |
| 🚗 Car | 50 km/h | 40 kcal | 400 km | Minimal | High CO₂ |
| 🏇 Horse (trot) | 15 km/h | 300 kcal | 80–120 km | Moderate | Near zero |
| 🛶 Rowing | 8 km/h | 500 kcal | 64 km | Very High | Zero CO₂ |
Cal/hr figures are approximate averages for 70 kg adult. Daily range assumes consistent effort for 8 hours.
test yourself
🧠 Distance Perception Quiz
How well does your brain actually understand distances? Find out.
Score: 0 / 0
The Earth in Steps
The circumference of Earth is about 40,075 km. At 10,000 steps per day (≈ 7.5 km), it would take you approximately 14.6 years of non-stop walking to circle the globe — not counting sleep, meals, or oceans. The longest confirmed walk around the world (by Jean Béliveau, 2001–2011) took 11 years over 75,000 km through 64 countries.