It's about 60,000 times as tall as a Telephone Pole.
In other words, 668 kilometers is 61,000 times the height of a Telephone Pole, and the height of a Telephone Pole is 0.0000160 times that amount.(a.k.a. Utility Pole, a.k.a Power Pole, a.k.a. Telegraph Pole, a.k.a. Telegraph Post, a.k.a. Hydro Pole) (exposed height; per Florida Public Service Commission average)
A standard telephone pole is 0.011 kilometers tall. Despite alternatives, most telephone poles in the US are made of wood — most commonly pine — and have a lifespan of 25 to 50 years, depending on climate and preservatives applied.
It's about 80,000 times as long as a London bus.
In other words, 668 kilometers is 79,700 times the length of a London bus, and the length of a London bus is 0.00001250 times that amount.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 0.00838 kilometers 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 100,000 times as tall as a Giraffe.
It's about 150,000 times as long as a Beetle (Volkswagen).
In other words, 668 kilometers is 163,800 times the length of a Beetle (Volkswagen), and the length of a Beetle (Volkswagen) is 0.0000061050 times that amount.(1964 model) (a.k.a. Volkswagen 1200, a.k.a. Käfer)
A 1964 Volkswagen Beetle measures 0.004079 kilometers. As the longest continuously-produced automobile design — in production for 75 years between 1938 and 2003 — the Beetle was voted the most fourth-most influential car of the twentieth century by the Global Automotive Elections Foundation.
It's about 300,000 times as tall as a Christmas Tree (artificial).
In other words, 668 kilometers is 290,000 times the height of a Christmas Tree (artificial), and the height of a Christmas Tree (artificial) is 0.00000340 times that amount.(artificial; average height)
The most common height of an artificial Christmas Tree is 0.0023 kilometers. According to the most recent USDA Census of Agriculture, a total of 1,389.59 sq. km (343,374 acres) of Christmas Trees were farmed in the US in 2007.
To all those observing, Merry Christmas from The Measure of Things!
It's about 300,000 times as tall as André the Giant.
In other words, the height of André the Giant is 0.00000330 times 668 kilometers.(Andr( Ren( Ruossimoff) (1946-1993) (wrestler and actor; WWE kayfabe height)
Andr& the Giant, who had a pituitary syndrome called acromegaly, was 0.0022 kilometers tall. Prior to 1973, Roussimoff was billed as having a height of 0.0021 kilometers and his true height is the subject of some dispute.
It's about 300,000 times as tall as Shaq.
In other words, the height of Shaq is 0.00000330 times 668 kilometers.(Shaquille O'Neal) (1972-) (professional basketball player, most famously of the Los Angeles Lakers)
Shaq is 0.0022 kilometers tall. Shaq maintains an active interest in police work and has served as a reserve officer in both Los Angeles, California and Miami, Florida while playing for NBA franchises in those cities.