1. A unit of length equal to 1,000 meters, or approximately 0.621 miles.
Usage: Standard metric unit of distance.; Spelled 'kilometer' in U.S. English; 'kilometre' in British English and other Commonwealth countries.

Examples

• The marathon is 42 kilometres long.
• The city is about 50 kilometres away from here.
• She runs 10 kilometres every morning.
• The speed limit on the highway is 100 kilometres per hour.
• The nearest hospital is only 5 kilometres from the village.