It's about four-fifths as long as The Rhine.
In other words, 650.24 miles is 0.793 times the length of The Rhine, and the length of The Rhine is 1.26 times that amount.(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)
It's about two-fifths as long as The Colorado River.
In other words, 650.24 miles is 0.449 times the length of The Colorado River, and the length of The Colorado River is 2.23 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)
It's about two-and-a-half times as long as The Grand Canyon.
In other words, 650.24 miles is 2.35 times the length of The Grand Canyon, and the length of The Grand Canyon is 0.426 times that amount.(a.k.a. Gran Cañón) (Arizona) (Colorado River miles measure)
The Grand Canyon has a total length of 277 miles 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 0.684 miles above the floor of Granite Gorge.
It's about two-fifths as long as The Danube.
In other words, 650.24 miles is 0.367 times the length of The Danube, and the length of The Danube is 2.72 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 1,770 miles 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 three-tenths as long as The Oregon Trail.
In other words, the length of The Oregon Trail is 3.33 times 650.24 miles.(from Independence, Missouri to Oregon City, Oregon)
It's about three-tenths as long as The Volga.
In other words, 650.24 miles is 0.296 times the length of The Volga, and the length of The Volga is 3.38 times that amount.(a.k.a. Волга, a.k.a. İdel (Идел), a.k.a. Атăл (Atăl), a.k.a. Edil, a.k.a. İdil, a.k.a. Рав (Rav)) (from the Valdai Hills, Tver Oblast, Russia through the Caspian Sea)
It's about three-tenths as long as The Mississippi River.
In other words, 650.24 miles is 0.2779 times the length of The Mississippi River, and the length of The Mississippi River is 3.598 times that amount.(from Lake Itasca, Minnesota through Pilottown, Plaquemines Parish, Louisiana)