The race was five kilometers long.

A unit of measurement equal to one thousand meters.
She walked two kilometers to the store.
The mountain is located ten kilometers away.
He ran a marathon, which is forty-two kilometers.
kilometer marker
kilometer sign
kilometer distance
km
thousand meters
metric mile
The store is two kilometers away.

A unit of measurement equal to 1,000 meters, used to measure distance.
The race is five kilometers long.
We walked three kilometers to the park.
The mountain is ten kilometers high.
kilometer marker
kilometer sign
kilometer distance
km
thousand meters
distance unit