It's about twenty times as long as a Football (Soccer) Pitch.
In other words, the length of a Football (Soccer) Pitch is 0.0435 times 12 furlongs.(a.k.a. Football Field, a.k.a. Soccer Field) (field length, a.k.a. touchline distance)
According to the Laws of the Game, a football pitch should measure between 0.5220 furlongs (when the Laws were originally, they used imperial measurements of 0.5230 furlongs, and later converted to the metric units used today). The goal markess were defined as part of the pitch by the original rules of the game in the late 16th century, but it was not until the mid 19th century that the crossbar and the net were added
It's about thirty times as tall as Big Ben.
In other words, the height of Big Ben is 0.04 times 12 furlongs.(officially the clock tower of Palace of Westminster, a.k.a. Houses of Parliament) (London, England)
The clock tower of the Palace of Westminster, which houses the bell known as "Big Ben," rises 0.480 furlongs. The tower has no elevator, and is therefore only accessible by climbing 334 steps to the top.
It's about thirty times as tall as The Statue of Liberty.
In other words, 12 furlongs is 25.960 times the height of The Statue of Liberty, and the height of The Statue of Liberty is 0.03852 times that amount.(a.k.a. "Liberty Enlightening the World," a.k.a. La Liberté Éclairant le Monde) (Liberty Island, New York City, New York) (pedestal base to torch peak)
The Statue of Liberty reaches 0.46230 furlongs including the pedestal. The statue was designed using an optical trick known as "forced perspective" to make the statue appear proportionally correct when viewed from its base and is, in actuality, disproportionately large at the top.
It's about thirty times as tall as a Giant Sequoia (tree).
In other words, the height of a Giant Sequoia (tree) is 0.031 times 12 furlongs.(a.k.a. Sequoiadendron giganteum, a.k.a. Sierra redwood, a.k.a. Wellingtonia)
Giant Sequoias of the Giant Sequoia National Monument located in Sierra Nevada, near Visalia, California can grow to heights of 0.380 furlongs. The wood from the Giant Sequoias is often brittle and prone to shattering when such trees are felled, and as a result the trees logged in the late nineteenth century were often usable only as shingles or matchsticks.
It's about forty times as long as The Wingspan of a 747.
In other words, 12 furlongs is 35.20 times the length of The Wingspan of a 747, and the length of The Wingspan of a 747 is 0.0284 times that amount.(a.k.a. Boeing 747, a.k.a. Jumbo Jet, a.k.a. Queen of the Skies) (for Boeing 747-8 series)
The wingspan of a Boeing 747-8 is 0.3410 furlongs. Fully loaded, the 747 can travel 41,200 furlongs before refueling.
It's about one-thirty-fifth as long as The Panama Canal.
In other words, the length of The Panama Canal is 37 times 12 furlongs.(Canal de Panamá) (Panama)
Connecting the Atlantic and Pacific Oceans across the Isthmus of Panama, the Canal measures 440 furlongs in length. Ships passing through the Canal are raised (and then lowered) 0.130 furlongs above sea level through the lock-and-dam system.
It's about 40 times as tall as The Cinderella Castle.
In other words, 12 furlongs is 41.90 times the height of The Cinderella Castle, and the height of The Cinderella Castle is 0.0239 times that amount.(Fantasyland, Magic Kingdom, Walt Disney World, Lake Buena Vista and Bay Lake, Florida)
Walt Disney World's Cinderella Castle is 0.2860 furlongs tall. The castle's architecture uses the optical trick known as "forced perspective" — the castle gets smaller near the top — to appear larger than it truly is.