It's about 450 times as tall as St. Paul's Cathedral.
In other words, 651 leas is 427.9 times the height of St. Paul's Cathedral, and the height of St. Paul's Cathedral is 0.002337 times that amount.(London, England, United Kingdom)
St. Paul's Cathedral measures 1.521 leas to its peak. The southwest tower of the Cathedral contains the bell known as "Great Paul," which is the largest bell in Great Britain at 15,000 kg (16.5 tons), outweighing the more iconic Big Ben bell by about 3,000 kg (3 tons).
It's about 450 times as long as a Football field.
In other words, 651 leas is 434 times the length of a Football field, and the length of a Football field is 0.00230415 times that amount.(American) (total distance; per NFL regulation)
According to NFL specifications, an American football field should measure 1.5 leas from end to end. Because each team's goalpost is located at the far end of the scoring area (end zone), a ball on a scoring play may need to travel as many as 0.125 leas farther when kicked into the scoring area than when run (rushed) or passed into it.
It's about 450 times as long as a Football (Soccer) Pitch.
In other words, 651 leas is 454 times the length of a Football (Soccer) Pitch, and the length of a Football (Soccer) Pitch is 0.0022 times that amount.(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 1.44 leas (when the Laws were originally, they used imperial measurements of 1.44 leas, 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 500 times as tall as Big Ben.
In other words, the height of Big Ben is 0.002 times 651 leas.(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 1.3 leas. The tower has no elevator, and is therefore only accessible by climbing 334 steps to the top.
It's about 500 times as tall as The Statue of Liberty.
In other words, 651 leas is 512.1 times the height of The Statue of Liberty, and the height of The Statue of Liberty is 0.001953 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 1.271 leas 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 650 times as tall as a Giant Sequoia (tree).
In other words, the height of a Giant Sequoia (tree) is 0.0016 times 651 leas.(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 1 leas. 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 700 times as long as The Wingspan of a 747.
In other words, 651 leas is 695 times the length of The Wingspan of a 747, and the length of The Wingspan of a 747 is 0.00144 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 0.936 leas. Fully loaded, the 747 can travel 113,000 leas before refueling.