The kilometer equals 1000 meters and is the standard unit for road distances in almost every country except the US and UK. Speed limits in Europe, Asia, Australia and most of Africa are given in km/h. A kilometer is roughly 1250 adult walking steps and takes about 12 minutes on foot.
Real-world: London to Paris by Eurostar is 344 km. A full marathon is 42.195 km. Most European motorway speed limits are 120โ130 km/h.
Read full kilometer reference โThe furlong equals 201.168 meters or 1/8 of a statute mile. It originated as the length of a medieval English plough furrow โ "furrow long". Today it survives mainly in horse racing in the UK, Ireland and North America, where race distances are typically 5 to 12 furlongs.
Real-world: The Epsom Derby is run over 1 mile and 4 furlongs (about 2.4 km). The Kentucky Derby is 10 furlongs.
Read full furlong reference โ