In metric system kilometer is a unit of length, which is commonly abbreviated as Km. 1 kilometer is approximately equal to 1000 meters, in terms of feet 1 kilometer is equal to 3280.8 feet or in terms of mile 1 km is equal to .621 mile
Distance covered with a stride of length .762 metre or 2.5 feet is mathematically defined as 1 unit of step. Although the stride length may vary from person to person depending upon the height
A typical adult can cover 1 mile or 1.6 km in 2000 steps at moderate pace. So roughly there are 1200 steps in 1 km
By formula we know that 1 mile ~1.6 km .Thus 1 mile is a greater than 1 km
It would take around 20500/1.6 *15 mins to 20500/20 mins to cover the distance of 20500 kms
Yes, walking helps in maintaining right weight and health as well.It prevents us from life threatning diseases like heart attacks, diabetes, obesity,high blood pressures etc.So in order to stay healthy and fit walk 20500 kms or any minimum distance that suits you.
According to a research in order to stay healthy everyone should take minimum 5000 steps daily.Though prescribed number of steps are 10,000