12km
12 km, or 12 kilometers, is a unit of length in the metric system. It equals 12,000 meters and is commonly used to describe distances between geographic points, road lengths, and running routes. In miles, 12 kilometers is about 7.46 miles, and in nautical terms it is approximately 6.48 nautical miles.
Usage and context: In athletics, 12 km is a road-race distance used in some competitions and in
Origin and notation: The kilometer is derived from the prefix kilo- meaning thousand and the base unit