It's about three-fourths as long as The Rhine.
In other words, the length of The Rhine is 1.33 times 614.8 miles.(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 820 miles 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 two times as long as The Grand Canyon.
In other words, 614.8 miles is 2.22 times the length of The Grand Canyon, and the length of The Grand Canyon is 0.45 times that amount.(a.k.a. Gran Cañón) (Arizona) (Colorado River miles measure)
It's about two-fifths as long as The Colorado River.
In other words, 614.8 miles is 0.425 times the length of The Colorado River, and the length of The Colorado River is 2.35 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 1,450 miles in length. Along this length, the river descends from its source, approximately 1.71 miles above sea level in the Rocky Mountains, to its mouth in the Gulf of California.
It's about one-third as long as The Danube.
In other words, 614.8 miles is 0.347 times the length of The Danube, and the length of The Danube is 2.88 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)
It's about three-tenths as long as The Oregon Trail.
In other words, 614.8 miles is 0.284 times the length of The Oregon Trail, and the length of The Oregon Trail is 3.52 times that amount.(from Independence, Missouri to Oregon City, Oregon)
It's about three-tenths as long as The Volga.
In other words, 614.8 miles is 0.28 times the length of The Volga, and the length of The Volga is 3.57 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 one-fourth as long as The Mississippi River.
In other words, 614.8 miles is 0.2627 times the length of The Mississippi River, and the length of The Mississippi River is 3.807 times that amount.(from Lake Itasca, Minnesota through Pilottown, Plaquemines Parish, Louisiana)