Today, April 10, 2026, four astronauts are splashing down off the coast of San Diego after completing one of the most extraordinary journeys in the history of human spaceflight.
NASA's Artemis II mission — crewed by Reid Wiseman, Victor Glover, and Christina Koch, and Canadian astronaut Jeremy Hansen — traveled 252,756 miles from Earth, shattering the record for the farthest distance any human has ever ventured from our planet. The previous record had stood for 56 years, set by the crew of Apollo 13 in April 1970. [1]
It was also the first time humans had left Earth orbit since Apollo 17 in 1972 — more than half a century ago. The mission carried several additional firsts: Victor Glover became the first Black astronaut, Christina Koch the first woman, and Jeremy Hansen the first non-American astronaut to travel this far into deep space. [2]
"From the cabin of Integrity here, as we surpass the furthest distance humans have ever traveled from planet Earth, we do so in honoring the extraordinary efforts and feats of our predecessors," astronaut Jeremy Hansen said as the crew passed the record mark. [1]
That distance — 252,756 miles — is almost exactly the distance from the Earth to the Moon. Which got us thinking about a question that's equal parts absurd and surprisingly motivating: how long would it take you to walk there?
Your phone has been counting your steps all day. By tonight it will show you a number — maybe 3,800, maybe 7,200. But what does that number actually mean in terms of real distance? Not miles in a day. What does it mean at Artemis scale?
Note on the math: We use the standard approximation of 2,000 steps per mile, which assumes an average stride length of roughly 2.5 feet. Your actual number varies with height and pace — use the Steps in a Mile calculator at HelpCalculate.com to find your personal figure. [3]
Find your steps per mile
Enter height and pace to replace the 2,000 steps/mile rule with your own stride, then re-run these mental models with your numbers.
Open Steps in a Mile calculatorThe Artemis II Mission by the Numbers
Before we scale down to daily steps, here's the full scope of what Artemis II accomplished — and what it would mean in step-count terms:
| Artemis II Milestone | Distance | Equivalent in Steps |
|---|---|---|
| Previous record (Apollo 13, 1970) | 248,655 miles | 497,310,000 steps |
| Artemis II maximum distance | 252,756 miles | 505,512,000 steps |
| Record broken by | 4,101 miles | 8,202,000 steps |
| Closest approach to Moon surface | 4,067 miles | 8,134,000 steps |
| Average Earth–Moon distance | 238,855 miles | 477,710,000 steps |
To put 252,756 miles in step-count perspective: at 10,000 steps per day, it would take 138 years to cover that distance on foot. At the average American's 4,000 steps per day, it would take 346 years.
And the 4,101-mile gap between the Apollo 13 record and what Artemis II achieved? At 10,000 steps per day, that extra distance alone would take 2.25 years to walk.
Now: How Far Are You Actually Walking Each Day?
According to the CDC, the average American walks roughly 4,000 to 5,000 steps per day — well below the commonly cited 10,000-step goal. [4] At 2,000 steps per mile, that translates to:
| Daily Steps | Miles Per Day | Miles Per Year |
|---|---|---|
| 4,000 (avg American) | 2.0 miles | 730 miles |
| 5,000 | 2.5 miles | 912 miles |
| 7,500 (moderately active) | 3.75 miles | 1,369 miles |
| 10,000 (target goal) | 5.0 miles | 1,825 miles |
Those yearly totals start to feel meaningful quickly. 730 miles per year is roughly the distance from New York City to Chicago. 1,825 miles per year is roughly New York to Denver. In a decade, the gap between 4,000 and 10,000 steps per day is the difference between walking 7,300 miles and walking 18,250 miles — nearly 11,000 miles.
Destination 1: Walk Across America — 2,800 Miles
The overland distance from New York City to Los Angeles is approximately 2,800 miles. Here's how long it takes at different daily step counts:
| Daily Steps | Miles/Day | Days | Time |
|---|---|---|---|
| 4,000 | 2.0 | 1,400 | 3.8 years |
| 5,000 | 2.5 | 1,120 | 3.1 years |
| 7,500 | 3.75 | 747 | 2.0 years |
| 10,000 | 5.0 | 560 | 1.5 years |
The gap between 4,000 and 10,000 steps: 2.3 years less to walk the same distance. Over a lifetime of walking, that difference compounds into extraordinary mileage.
🗺️ Fun fact: Karl Bushby holds the record for the longest continuous walk in history — 36,000 miles across five continents. Even at 10,000 steps per day, covering his route would take 19.7 years.
Destination 2: Walk Around the Earth — 24,901 Miles
The circumference of the Earth at the equator is 24,901 miles.
| Daily Steps | Miles/Day | Days | Time |
|---|---|---|---|
| 4,000 | 2.0 | 12,451 | 34.1 years |
| 5,000 | 2.5 | 9,961 | 27.3 years |
| 7,500 | 3.75 | 6,640 | 18.2 years |
| 10,000 | 5.0 | 4,980 | 13.6 years |
The average person who maintains 7,500 steps per day from age 20 to age 80 walks approximately 82,125 miles — just over 3.3 times around the circumference of the Earth. At 10,000 steps per day, that figure climbs to 109,500 miles — 4.4 laps around the planet.
One striking study found that the average adult logs 478 million steps in a lifetime, totalling roughly 239,000 miles — almost exactly the distance from the Earth to the Moon. [5] That's not a coincidence; it's the number Artemis II just flew.
Destination 3: Walk to the Moon — 238,855 Miles
The average Earth–Moon distance is 238,855 miles. Artemis II traveled 252,756 miles — 13,901 miles farther than the Moon's average distance. Here's what those distances look like on foot:
| Daily Steps | Miles/Day | Years to Moon (238,855 mi) | Years to Artemis II distance (252,756 mi) |
|---|---|---|---|
| 4,000 | 2.0 | 327 years | 346 years |
| 5,000 | 2.5 | 262 years | 277 years |
| 7,500 | 3.75 | 174 years | 184 years |
| 10,000 | 5.0 | 131 years | 138 years |
No daily step count gets you there in a single lifetime. But here is the number worth sitting with:
💡 The motivating calculation: at 10,000 steps per day for 78 years of adult walking, you cover approximately 142,350 miles — about 56% of the way to where Artemis II traveled.
At 4,000 steps per day for the same 78 years, you cover 56,940 miles — just 22.5% of the Artemis II distance.
The gap between the average American's step count and the 10,000-step goal, maintained over a lifetime, is 85,410 miles. That's 3.4 times around the Earth — the invisible distance created or lost purely by the size of your daily step count.
The Lifetime Math — All Three Destinations
| Daily Steps | Lifetime Miles (78 yrs) | Earth Laps | % of Artemis II Distance |
|---|---|---|---|
| 4,000 (avg American) | 56,940 mi | 2.3× | 22.5% |
| 5,000 | 71,175 mi | 2.9× | 28.2% |
| 7,500 | 106,763 mi | 4.3× | 42.2% |
| 10,000 | 142,350 mi | 5.7× | 56.3% |
What Artemis II's Journey Puts in Perspective
Artemis II covered 252,756 miles in approximately 9 days. The four astronauts traveled farther from Earth than any humans in history — a distance that would take a dedicated 10,000-steps-per-day walker 138 years to cover on foot.
That's humbling. But it's also clarifying. The distance to the Moon isn't just a number in an astronomy textbook — it's the distance your legs are quietly accumulating, step by step, over a lifetime. The astronauts got there in a week. You're getting there in a lifetime. Both journeys matter.
As astronaut Jeremy Hansen put it from the cabin of Integrity: "We choose this moment to challenge this generation and the next to make sure this record is not long-lived." [1]
You don't need a rocket. You just need your steps.
The 10,000-Step Myth — and the Real Target
The 10,000-step goal originated as a marketing slogan for a Japanese pedometer in the 1960s — not a medical recommendation. [6] Research since then has refined the picture considerably.
A 2022 study in JAMA Neurology found the optimal step count for reducing dementia risk was 9,800 steps per day. A 2025 Lancet study found that reaching 7,000 steps per day was associated with a 47% reduction in all-cause mortality risk. [7]
The practical takeaway: you don't need 10,000 steps to get most of the health benefit. The biggest gains come from moving from sedentary (under 4,000) to moderately active (7,000+). Going from 4,000 to 7,000 steps is the single highest-return move most people can make.
In cosmic terms: going from 4,000 to 7,500 steps per day adds 49,823 miles to your lifetime total — almost twice around the Earth, created by adding roughly 45 minutes of additional walking per day.
Try It With Your Own Numbers
HelpCalculate's Steps in a Mile calculator lets you enter your height and walking pace to find your personal steps-per-mile figure. Taller walkers typically cover a mile in fewer steps; shorter walkers take more.
Use the Age calculator alongside it to find exactly how many walking days you have ahead, and what step count would get you to your own personal distance milestone.
Both are free at helpcalculate.com.
Cited sources
- NASA — Artemis II crew eclipses record for farthest human spaceflight, April 6, 2026 — nasa.gov/news-release/nasas-artemis-ii-crew-eclipses-record-for-farthest-human-spaceflight/
- CNN — Artemis II moon mission: What to know about the historic journey — cnn.com/2026/04/03/science/artemis-2-astronauts-moon-whats-next
- Steps in a Mile — average stride calculation — omnicalculator.com/sports/steps-to-miles
- CDC — American average step counts, Physical Activity Guidelines — cdc.gov
- Scholl footcare study via The London Economic — average adult lifetime steps — thelondoneconomic.com/lifestyle/you-will-never-guess-how-many-times-you-will-walk-around-the-earth
- Manpo-kei (10,000-step meter) — background on the Japanese pedometer and 1960s marketing
- Lancet Public Health 2025, Ding et al — 7,000 steps and mortality reduction