It's about one-and-three-fifths times as long as The Danube
In other words, 2,640,000 smoots is 1.580 times the length of The Danube, and the length of The Danube is 0.6330 times that amount.(a.k.a. Donau, a.k.a. Dunaj, a.k.a. Dunav, a.k.a. Duna, a.k.a. Дунав (Dunav), a.k.a. Dunărea, a.k.a. Дунáй (Dunay), a.k.a. Tuna) (from Breg Martinskapelle, Black Forest, Germany through the Danube Delta, Romania)
The Danube river runs 1,670,000 smoots in total length. Intersecting Vienna, Austria; Bratislava, Slovakia; Budapest, Hungary; and Belgrade, Serbia, the Danube touches more capital cities than any other river.
It's about one-and-nine-tenths times as long as The Colorado River
In other words, 2,640,000 smoots is 1.930 times the length of The Colorado River, and the length of The Colorado River is 0.5180 times that amount.(a.k.a. Aha Kwahwat, a.k.a. Grand River, a.k.a. Tizon River, a.k.a. Tecon River, a.k.a. Tison River) (from Grand Lake, Colorado through the Gulf of California)
The Colorado River runs 1,370,000 smoots in length. Along this length, the river descends from its source, approximately 1,620 smoots above sea level in the Rocky Mountains, to its mouth in the Gulf of California.
It's about half as long as The Great Wall of China (total)
In other words, 2,640,000 smoots is 0.5080 times the length of The Great Wall of China (total), and the length of The Great Wall of China (total) is 1.970 times that amount.(长城, 長城, Chángchéng, a.k.a. 万里长城, 萬里長城, Wànlǐ Chángchéng) (a.k.a. "The long wall of 10,000 Li") (from Shanhaiguan through Lop Nur, China) (total length, all branches)
The Great Wall of China, including all branches and trenches, is 5,200,000 smoots. Built and maintained in multiple sections over about eleven centuries, the Great Wall is currently suffering the effects of erosion, especially in the older sections made primarily out of mud.
It's about one-third as long as The Diameter of Earth
In other words, 2,640,000 smoots is 0.352199420 times the length of The Diameter of Earth, and the length of The Diameter of Earth is 2.83930050 times that amount.(Equatorial)
The Earth Ã¢â‚¬â€ not a perfect sphere, but rather an oblate spheroid with bulged middle Ã¢â‚¬â€ has a diameter of approximately 7,495,753.30 smoots at the Equator. The first complete view of Earth's diameter was in a photograph taken from a V-2 rocket launched in 1946 by the United States Army, which reached an altitude of 61,468.6570 smoots.
It's about three-and-a-half times as long as The Rhine
In other words, the length of The Rhine is 0.2940 times 2,640,000 smoots.(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 776,000 smoots 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.
It's about one-tenth as long as The Circumfrence of Earth
In other words, 2,640,000 smoots is 0.112108560 times the length of The Circumfrence of Earth, and the length of The Circumfrence of Earth is 8.91992550 times that amount.(Equatorial)
The Earth — not a perfect sphere, but rather an oblate spheroid with bulged middle — has an Equatorial circumference of approximately 23,548,604 smoots. The first airplane trip around the circumference of the Earth (with a few stops along the way), was completed in 1924 by the United States Army Air Service, and took 175 days.
It's about ten times as long as The Grand Canyon
In other words, 2,640,000 smoots is 10.10 times the length of The Grand Canyon, and the length of The Grand Canyon is 0.099 times that amount.(a.k.a. Gran Cañón) (Arizona) (Colorado River miles measure)
The Grand Canyon has a total length of 262,000 smoots 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 646 smoots above the floor of Granite Gorge.