How long is 613 miles?
It's about three-fourths as long as The Rhine
The length of The Rhine is about 820 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)
It's about two times as long as The Grand Canyon

The length of The Grand Canyon is about 277 miles.
(a.k.a. Gran Cañón) (Arizona) (Colorado River miles measure)
It's about two-fifths as long as The Colorado River

The length of The Colorado River is about 1,450 miles.
(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 one-third as long as The Danube
The length of The Danube is about 1,770 miles.
(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

The length of The Oregon Trail is about 2,170 miles.
(from Independence, Missouri to Oregon City, Oregon)
It's about three-tenths as long as The Volga
The length of The Volga is about 2,190 miles.
(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

The length of The Mississippi River is about 2,340 miles.
(from Lake Itasca, Minnesota through Pilottown, Plaquemines Parish, Louisiana)
It's about one-fifth as long as The Distance from L.A. to New York

The length of The Distance from L.A. to New York is about 2,790 miles.
(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)
It's about one-fifth as long as I-80

The length of I-80 is about 2,881.940 miles.
(a.k.a. Interstate 80, a.k.a. Keystone Shortway) (net length)
It's about one-fifth as long as The Great Wall of China (wall only)

The length of The Great Wall of China (wall only) is about 3,889 miles.
(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) (wall segments only)
It's about one-fifth as long as The Amazon River
The length of The Amazon River is about 4,000 miles.
(from Nevado Mismi, Arequipa, Peru through near Marajó, Brazil) (approximate distance)
It's about eight times as long as Hadrian's Wall

The length of Hadrian's Wall is about 75 miles.
(a.k.a. Roman Wall, a.k.a. The Wall, a.k.a. Vallo di Adriano, a.k.a. Vallum Aelium, a.k.a. Severus' Wall) (from North Tyneside, Tyne and Wear, England, United Kingdom to Cumbria, North West England, United Kingdom)
It's about eight-and-a-half times as long as The 405

The length of The 405 is about 72.4150 miles.
(a.k.a. I-405, Interstate 405, San DIego Freeway) (Southern California)
It's about one-tenth as long as The Great Wall of China (total)

The length of The Great Wall of China (total) is about 5,500 miles.
(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)
It's about nine times as wide as The English Channel
The width of The English Channel is about 66.50 miles.
(average width between Isle of Ushant and The Walde Lighthouse) (La Manche, Ärmelkanal, Mor Breizh, Mor Bretannek) (a.k.a. The Channel)