Distances between towns is one possibility.
Bigger objects like celestial bodies ,Earth ,sun their radius are measured in kilometers .
Distance.
42,195km
24.31 kilometers = 2,431,000 centimeters
A 26.2-mile marathon is 42.16 kilometers.
they are measured in centimeters.
Kilometers are units of one thousand meters, so they measure distance. Items that would be measured in kilometers are road lengths or air miles traveled.
Unfortunately, an animals kilometers are not a measure of mass. If you knew the volume of the animal and the density you could find the mass in grams.
Time is not measured in kilometers.
The average distance is 1,433,449,370 kilometers.
kilometers
meters