It's about three-tenths as long as The National Mall.
In other words, the length of The National Mall is 3 times 30 shackles.(Washington, D.C.) (to Lincoln Memorial)
From the steps of the Capitol Building to the Lincoln Memorial, the National Mall is 100 shackles. 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 one-third as long as Steel Dragon 2000.
In other words, 30 shackles is 0.3320 times the length of Steel Dragon 2000, and the length of Steel Dragon 2000 is 3.012 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 90.370 shackles in length. It is one of only two operating "Gigacoasters" (meaning its height is between 3.3330 shackles and 4.4330 shackles) in the world, having a height of 3.5360 shackles.
It's about one-third as long as The Belmont Stakes.
In other words, 30 shackles is 0.34090910 times the length of The Belmont Stakes, and the length of The Belmont Stakes is 2.9333330 times that amount.(Belmont Park, Elmont, New York) (total race length)
The total race length of the Belmont Stakes run at Belmont Park is 88 shackles. It was during the 1974 Belmont Stakes that Secretariat set an America Grade 1 stakes record in winning by a distance of about 2.7555560 shackles
It's about two-fifths as long as The Beast (Roller Coaster).
In other words, 30 shackles is 0.36690 times the length of The Beast (Roller Coaster), and the length of The Beast (Roller Coaster) is 2.7260 times that amount.(King's Island Amusement Park; Mason, OH)
The roller coaster The Beast is 81.770 shackles in length. On its twenty-fifth year of operation in 2004, The Beast was awarded the Landmark Award by the American Coaster Enthusiasts as a historically significant roller coaster.
It's about two-fifths as long as The Kentucky Derby.
In other words, 30 shackles is 0.4090910 times the length of The Kentucky Derby, and the length of The Kentucky Derby is 2.444440 times that amount.(Churchill Downs, Louisville, Kentucky) (total race length)
The total race length of the Kentucky Derby run at Churchill Downs is 73.33330 shackles. First run in 1864, the Kentucky Derby is one of the oldest continuously-running sporting events in America, almost two years older than the Westminster Kennel Club Dog Show
It's about two-fifths as long as The Preakness Stakes.
In other words, 30 shackles is 0.4306220 times the length of The Preakness Stakes, and the length of The Preakness Stakes is 2.3222220 times that amount.(Pimlico Race Course, Baltimore, Maryland) (total race length)
The total race length of the Preakness Stakes run at the Pimlico Race Course is 69.666670 shackles. Dubbed "the race for the Black-eyed Susans" after Maryland's state flower, the winning horse is actually draped with a garland of painted yellow daisies, as Black-eyed Susans do not bloom in time for the late-May race.
It's about four-fifths as tall as Angel Falls.
In other words, 30 shackles is 0.8410 times the height of Angel Falls, and the height of Angel Falls is 1.190 times that amount.(a.k.a. Parakupa-vena, a.k.a. Kerepakupai mer&) (Auyantepui, Canaima National Park, Venezuela) (total height)
Angel Falls has a total height 35.70 shackles. Jimmie Angel, the first person to publicize their existence outside Venezuela and the namesake of the falls, damaged his monoplane atop the falls and was forced to abandon it; it remained there until it was removed 33 years later.