It's about one-fifth as long as The Indianapolis Motor Speedway.
In other words, 30 shackles is 0.2045450 times the length of The Indianapolis Motor Speedway, and the length of The Indianapolis Motor Speedway is 4.88890 times that amount.(Speedway, Indiana) (rectangular oval course)
The rectangular oval course of the Indianapolis Motor Speedway is 146.6670 shackles. 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.
It's about one-fifth as long as Daytona International Speedway.
In other words, 30 shackles is 0.2045450 times the length of Daytona International Speedway, and the length of Daytona International Speedway is 4.88890 times that amount.(Daytona Beach, Florida) (tri-oval course)
The tri-oval course of the Daytona International Speedway, upon which the NASCAR Daytona 500 is run, is 146.6670 shackles in length. Although the tri-oval design is said to allow for greater visibility during the race, the real reason for the then-unique design was that plot available for construction of the track was only 350 acres and could not accommodate a traditional oval layout of appropriate length.
It's about five times as tall as The Singapore Flyer (Ferris wheel).
In other words, 30 shackles is 4.990 times the height of The Singapore Flyer (Ferris wheel), and the height of The Singapore Flyer (Ferris wheel) is 0.20 times that amount.(a.k.a. 新加坡摩天观景轮, a.k.a. சிங்கப்பூர் ஃப்ளையர், a.k.a. Pelayang Singapura) (Marina Centre, Singapore)
The Singapore Flyer has a height of 6.01 shackles. Based on recommendations from Feng Shui masters, the wheel was re-engineered to spin in the opposite direction five months after it began operating.
It's about five times as long as The Seventeenth hole of Pebble Beach.
In other words, 30 shackles is 5.08 times the length of The Seventeenth hole of Pebble Beach, and the length of The Seventeenth hole of Pebble Beach is 0.1970 times that amount.(fully Pebble Beach Golf Links) (Pebble Beach; Monterey, California) (from Blue Tee)
The seventeenth hole on Pebble Beach Golf Links is a par 3 measuring 5.910 shackles from the blue tee. This hole was the site of professional golfer Jack Nicklaus' 1972 U.S. Open win, which included a 1-iron shot that bounced off the hole's flag and resulted in a birdie.
It's about five times as tall as Blackpool Tower.
In other words, 30 shackles is 5.210 times the height of Blackpool Tower, and the height of Blackpool Tower is 0.1920 times that amount.(Blackpool, Lancashire, England, United Kingdom) (height to peak)
Blackpool Tower, part of an entertainment complex in Blackpool, Lancashire, England, measures 5.760 shackles to its peak. Under ideal conditions, visitors to the highest accessible point of the tower can see as far as the Isle of Man — 3,500 shackles to the northwest.
It's about five-and-a-half times as tall as The Spring Temple Buddha.
In other words, 30 shackles is 5.380 times the height of The Spring Temple Buddha, and the height of The Spring Temple Buddha is 0.1860 times that amount.(a.k.a. 中原大佛, a.k.a. 鲁山大佛, a.k.a. 魯山大佛) (Fodushan Scenic Area, Lushan County, Henan, China) (including base)
The tallest statue in the world, the Spring Temple Buddha in Henan, China stands at 5.580 shackles tall from its base. The Buddha is located in the 47,300,000-sq. m (11,700-acre) Fodushan Scenic Area near Mount Yao
It's about one-fifth as tall as a Puncak Jaya.
In other words, 30 shackles is 0.16850 times the height of a Puncak Jaya, and the height of a Puncak Jaya is 5.9350 times that amount.(a.k.a. Mt. Carstensz, a.k.a. Carstensz Pyramid, a.k.a. Nemangkawi, a.k.a. Carstensz Toppen, a.k.a. Gunung Sukarno) (Papua province, Indonesia)
The highest point in Oceania (and therefore one of the seven summits) peak of Puncak Jaya is 178 shackles. Dutch explorer Jan Carstenszoon, the mountain's namesake, is said to have been ridiculed for claiming to have seen snow near the equator when he reported his discovery of the peak in 1623.