It's about one-and-three-fifths times as long as The Danube.
In other words, 449,000,000 centimeters 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 285,000,000 centimeters 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, 449,000,000 centimeters 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 233,000,000 centimeters in length. Along this length, the river descends from its source, approximately 275,000 centimeters 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, 449,000,000 centimeters is 0.5070 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 885,000,000 centimeters. 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, 449,000,000 centimeters is 0.351983680 times the length of The Diameter of Earth, and the length of The Diameter of Earth is 2.84104080 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 1,275,627,300 centimeters 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 10,460,736 centimeters.
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 449,000,000 centimeters.(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 132,000,000 centimeters 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, 449,000,000 centimeters is 0.112039890 times the length of The Circumfrence of Earth, and the length of The Circumfrence of Earth is 8.92539260 times that amount.(Equatorial)
The Earth — not a perfect sphere, but rather an oblate spheroid with bulged middle — has an Equatorial circumference of approximately 4,007,501,400 centimeters. 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, 449,000,000 centimeters 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 44,600,000 centimeters 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 110,000 centimeters above the floor of Granite Gorge.