It's about one-one-thousand-five-hundredth as long as The Panama Canal.
In other words, the length of The Panama Canal is 1,700 times 28.20 fathoms.(Canal de Panamá) (Panama)
Connecting the Atlantic and Pacific Oceans across the Isthmus of Panama, the Canal measures 48,000 fathoms in length. Ships passing through the Canal are raised (and then lowered) 14 fathoms above sea level through the lock-and-dam system.
It's about one-two-thousandth as long as The English Channel.
In other words, 28.20 fathoms is 0.000482 times the length of The English Channel, and the length of The English Channel is 2,070 times that amount.(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 58,500 fathoms, 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 one-two-thousand-five-hundredth as long as The 405.
In other words, 28.20 fathoms is 0.00044253 times the length of The 405, and the length of The 405 is 2,259.70 times that amount.(a.k.a. I-405, Interstate 405, San DIego Freeway) (Southern California)
Running from Irvine to San Fernando, The 405 runs a total of 63,725 fathoms. The 405 is the most heavily-trafficed freeway in the United States, with an average speed as low as 8 kph during rush hours.
It's about one-two-thousand-five-hundredth as long as Hadrian's Wall.
In other words, the length of Hadrian's Wall is 2,300 times 28.20 fathoms.(a.k.a. Roman Wall, a.k.a. The Wall, a.k.a. Vallo di Adriano, a.k.a. Vallum Aelium, a.k.a. Severus' Wall) (from North Tyneside, Tyne and Wear, England, United Kingdom to Cumbria, North West England, United Kingdom)
Hadrian's Wall, which crossed England form the North Sea to the Irish Sea during the time of Roman rule, measures 66,000 fathoms (about 79 Roman miles). Roman soldiers — at one time up to 10,000 of them — only occupied Great Britain for about 246 years after the wall was built, after which time the local Brits began to take residence the wall's garrisons.
It's about 3,500 times as long as an Aspirin.
In other words, the length of an Aspirin is 0.00027 times 28.20 fathoms.(for up & up aspirin, 325mg, regular strength tablets) (a.k.a. acetylsalicylic acid, a.k.a. ASA)
A single aspirin tablet measures 0.0077 fathoms in diameter. One of the most common medicines in the world and a foundation of worldwide health systems, an estimated 40,000 metric tons of aspirin are consumed each year.
It's about one-eight-thousand-five-hundredth as long as The Grand Canyon.
In other words, 28.20 fathoms is 0.000116 times the length of The Grand Canyon, and the length of The Grand Canyon is 8,620 times that amount.(a.k.a. Gran Cañón) (Arizona) (Colorado River miles measure)
The Grand Canyon has a total length of 244,000 fathoms along the course of the Colorado River at its bottom. Having opened in early 2007, the Grand Canyon Skywalk allows tourists to stand on a horseshoe-shaped glass walkway 601 fathoms above the floor of Granite Gorge.
It's about one-twenty-five-thousandth as long as The Rhine.
In other words, the length of The Rhine is 25,600 times 28.20 fathoms.(a.k.a. Rhein, a.k.a. Rijn, a.k.a. Rhin, a.k.a. Rain, a.k.a. Reno, a.k.a. Rhenus, a.k.a. Ryn) (from near Reichenau, Switzerland through Hoek van Holland, Rotterdam, Netherlands)
The Rhine river runs 722,000 fathoms in total length. The World War II Battle of Arnhem, as memorialized in the 1974 book and 1977 movie A Bridge Too Far, was the first of several attempts to capture key bridges across the Rhine, beginning with the Arnhem Bridge in the Netherlands.