The most common would be kilometers.
Some might use centimeters if they're feeling risky.
Others might even go down to nanometers, or .000000000001 kilometers. This would give them a very accurate answer.
Worldwide use:
The kilometre is used worldwide as a unit used for expressing distances between geographical locations on land, and in most countries is the official unit for this purpose.
Kilometers
time taking to walk
Type your answer here...kilometers
Tonnes
kilometre
Meters
distance
A global positioning system (GPS)
I would assume that you would use cm or even mm if you wanted to be more accurate
A metric ruler.
Kilometers
meters
kilometers
You would typically use the metric unit "kilometers" to measure the distance from home to school.
It depends on the distance between the two points. If it is more than a kilometer apart then you would use kilometer. Unless you wanna do it with centimeter. It's just whatever is easier.
Metres (in a built-up area), kilometres if across open spaces.
Miles is best.