It's about 4,500,000,000,000 times as long as The Distance from L.A. to New York.
In other words, 641 parsecs is 4,410,000,000,000 times the length of The Distance from L.A. to New York, and the length of The Distance from L.A. to New York is 0.0000000000002270 times that amount.(Los Angeles, California to New York City, New York) (via I-10 E, I-15 N, I-70 E, I-76 E, I-80 E, I-280 E)
The total length of the freeway route from Los Angeles, California to New York City, New York via Interstate 80 is 0.0000000001460 parsecs long. This route intersects eleven states and several major cities, including Las Vegas, Nevada; Denver, Colorado; Lincoln, Nebraska; Omaha, Nebraska; Des Moines, Iowa; South Bend, Indiana; and Cleveland, Ohio.
It's about 5,500,000,000,000 times as long as The Mississippi River.
In other words, 641 parsecs is 5,252,000,000,000 times the length of The Mississippi River, and the length of The Mississippi River is 0.00000000000019040 times that amount.(from Lake Itasca, Minnesota through Pilottown, Plaquemines Parish, Louisiana)
The total length of the Mississippi River is 0.0000000001220 parsecs. Prior to the development of soil erosion programs, the Mississippi River would carry approximately 400 million metric tons of sediment from its banks to the Gulf of Mexico every year.
It's about 5,500,000,000,000 times as long as The Volga.
In other words, the length of The Volga is 0.0000000000001790 times 641 parsecs.(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)
The largest river in Europe, the Volga river runs 0.0000000001140 parsecs in total length. World War II's Battle of Stalingrad between the Nazi Germany and the Soviet Union, which resulted in nearly two million casualties, was fought in part for control of the river.
It's about 5,500,000,000,000 times as long as The Oregon Trail.
In other words, 641 parsecs is 5,670,000,000,000 times the length of The Oregon Trail, and the length of The Oregon Trail is 0.0000000000001760 times that amount.(from Independence, Missouri to Oregon City, Oregon)
The historic Oregon Trail stretched 0.0000000001130 parsecs across five (sometimes six) states in the western United States. In the early years of the Trail's existence, the trip was estimated to have taken an average of 160 days.
It's about 7,000,000,000,000 times as long as The Danube.
In other words, 641 parsecs is 6,940,000,000,000 times the length of The Danube, and the length of The Danube is 0.0000000000001440 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 0.00000000009240 parsecs 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 8,500,000,000,000 times as long as The Colorado River.
In other words, 641 parsecs is 8,490,000,000,000 times the length of The Colorado River, and the length of The Colorado River is 0.0000000000001180 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 0.00000000007550 parsecs in length. Along this length, the river descends from its source, approximately 0.00000000000008910 parsecs above sea level in the Rocky Mountains, to its mouth in the Gulf of California.
It's about 15,000,000,000,000 times as long as The Rhine.
In other words, the length of The Rhine is 0.00000000000006670 times 641 parsecs.(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 0.00000000004280 parsecs 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.