odometer
Meters.
Kilometre.
The distance between two towns can be measured in either imperial or metric units of length. Imperial unit would be miles, whilst the metric unit would be kilometres.
kilometers
Meters
miles
You would use kilometers.
time taking to walk
A kilometre would be the most appropriate unit.
Type your answer here...kilometers
In the US it would be feet, yards or meters. Probably yards.
A global positioning system (GPS)