A furlong is a measure of distance
Distance between two points
The distance between two points is the length of a straight line between them.
Although its definition has varied historically, in modern terms it equals 660 feet
There are eight furlongs in a mile.
The name "furlong" derives from the Old English words furh (furrow) and lang (long).
It originally referred to the length of the furrow in one acre of a ploughed open field.