The average person walks around the Earth three times in a lifetime.

If you walk about 7,000–10,000 steps/day, that’s roughly 5–8 km/day, or ~1,800–3,000 km/year. Over 70–80 years, that can add up to 100,000–200,000+ km, which is about 2.5–5 trips around Earth’s 40,075 km circumference—so “three times” is a reasonable middle estimate.