It's about twenty times as tall as The Washington Monument
In other words, 20 furlongs is 23.7660 times the height of The Washington Monument, and the height of The Washington Monument is 0.042077 times that amount.(Washington, D.C.)
The Washington Monument measures 0.841540 furlongs tall, with some discrepancy due to the fact that the Monument's base is slightly below the surrounding ground. Interrupted in its construction by the American Civil War, it was almost 36 years between groundbreaking and the completion of construction.
It's about twenty times as tall as The Singapore Flyer (Ferris wheel)
In other words, 20 furlongs is 24.40 times the height of The Singapore Flyer (Ferris wheel), and the height of The Singapore Flyer (Ferris wheel) is 0.041 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 0.820 furlongs. 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 twenty times as long as The Seventeenth hole of Pebble Beach
In other words, 20 furlongs is 24.80 times the length of The Seventeenth hole of Pebble Beach, and the length of The Seventeenth hole of Pebble Beach is 0.0403 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 0.8050 furlongs 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 thirty times as tall as Blackpool Tower
In other words, 20 furlongs is 25.50 times the height of Blackpool Tower, and the height of Blackpool Tower is 0.0392 times that amount.(Blackpool, Lancashire, England, United Kingdom) (height to peak)
Blackpool Tower, part of an entertainment complex in Blackpool, Lancashire, England, measures 0.7850 furlongs to its peak. Under ideal conditions, visitors to the highest accessible point of the tower can see as far as the Isle of Man — 477 furlongs to the northwest.
It's about thirty times as tall as The Spring Temple Buddha
In other words, 20 furlongs is 26.30 times the height of The Spring Temple Buddha, and the height of The Spring Temple Buddha is 0.038 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 0.7610 furlongs 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-twenty-fifth as long as The English Channel
In other words, the length of The English Channel is 26.60 times 20 furlongs.(average width between Isle of Ushant and The Walde Lighthouse) (La Manche, Ärmelkanal, Mor Breizh, Mor Bretannek) (a.k.a. The Channel)
The English Channel measures between 532 furlongs, narrowing as it flows northeast. The world speed record for a Channel crossing by swimmer was set by Australian Trent Grimsey in 2012, with a time of 6 hours, 55 minutes.
It's about thirty times as long as The Shambles
In other words, the length of The Shambles is 0.037 times 20 furlongs.(a.k.a. Maze of Twisting, a.k.a. The Great Flesh Shambles) (York, England, United Kingdom) (approximate)
The Shambles, a historic shopping street in York, stretches about 0.750 furlongs. Several of the buildings along the street are over seven hundred years old.