It's about sixteen-and-a-half times as long as a London bus
In other words, 612 spans is 16.7 times the length of a London bus, and the length of a London bus is 0.060 times that amount.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 36.70 spans in length. The buses were said to be well-designed for travel in the London traffic, as they offered an open door for riders to board and exit even while the bus was moving at low speeds, and a full-time conductor to collect fares.
It's about one-fifteenth as long as The Belmont Stakes
In other words, 612 spans is 0.0579546 times the length of The Belmont Stakes, and the length of The Belmont Stakes is 17.2549 times that amount.(Belmont Park, Elmont, New York) (total race length)
The total race length of the Belmont Stakes run at Belmont Park is 10,560 spans. It was during the 1974 Belmont Stakes that Secretariat set an America Grade 1 stakes record in winning by a distance of about 330.66670 spans
It's about one-twentieth as long as Steel Dragon 2000
In other words, 612 spans is 0.0564 times the length of Steel Dragon 2000, and the length of Steel Dragon 2000 is 17.72 times that amount.(a.k.a. スチールドラゴン2000) (Nagashima Span Land; Kuwana, Mie Prefecture, Japan)
The roller coaster Steel Dragon 2000 is 10,840 spans in length. It is one of only two operating "Gigacoasters" (meaning its height is between 400 spans and 532 spans) in the world, having a height of 424.30 spans.
It's about one-twentieth as long as The National Mall
In other words, 612 spans is 0.1 times the length of The National Mall, and the length of The National Mall is 20 times that amount.(Washington, D.C.) (to Lincoln Memorial)
From the steps of the Capitol Building to the Lincoln Memorial, the National Mall is 10,000 spans. On December 4th, 2008, the entirety of the Mall was declared open to the public for the first time in American history in anticipation of the estimated two million visitors to the Mall for the inauguration of President Barack Obama on January 20th, 2009.
It's about thirty times as tall as a Giraffe
It's about one-thirtieth as long as The Hollywood Walk of Fame
In other words, 612 spans is 0.04 times the length of The Hollywood Walk of Fame, and the length of The Hollywood Walk of Fame is 28 times that amount.(Hollywood Boulevard and Vine Street, Hollywood, California) (approximate length)
The Hollywood Walk of Fame is approximately 17,000 spans. Gene Autry, most famous as the singer of "Back in the Saddle Again" and as the writer and singer of "Here Comes Santa Claus," is the only entertainer to have a star in every category — film, television, recording, radio, and theater. One of Autry's stars is also one of only two stars which have been stolen from the Walk and never recovered.
It's about one-thirtieth as long as The Indianapolis Motor Speedway
In other words, 612 spans is 0.034773 times the length of The Indianapolis Motor Speedway, and the length of The Indianapolis Motor Speedway is 28.7582 times that amount.(Speedway, Indiana) (rectangular oval course)
The rectangular oval course of the Indianapolis Motor Speedway is 17,600 spans. While famous for its automotive racing, the first motorsport held at the track was a series of motorcycle races in August, 1909 — a little less than two years before the inaugural Indianapolis 500 race was run.