It's about one-two-hundred-thousandth as long as The Danube
In other words, 49 feet is 0.00000524 times the length of The Danube, and the length of The Danube is 191,000 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 9,350,000 feet 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-two-hundred-fifty-thousandth as long as The Oregon Trail
In other words, 49 feet is 0.00000428 times the length of The Oregon Trail, and the length of The Oregon Trail is 234,000 times that amount.(from Independence, Missouri to Oregon City, Oregon)
The historic Oregon Trail stretched 11,500,000 feet 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 one-two-hundred-fifty-thousandth as long as The Volga
In other words, 49 feet is 0.00000423 times the length of The Volga, and the length of The Volga is 236,000 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)
The largest river in Europe, the Volga river runs 11,600,000 feet 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 one-two-hundred-fifty-thousandth as long as The Mississippi River
In other words, 49 feet is 0.000003966 times the length of The Mississippi River, and the length of The Mississippi River is 252,100 times that amount.(from Lake Itasca, Minnesota through Pilottown, Plaquemines Parish, Louisiana)
The total length of the Mississippi River is 12,360,000 feet. 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 one-three-hundred-thousandth as long as The Distance from L.A. to New York
In other words, 49 feet is 0.00000333 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 300,000 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 14,700,000 feet 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 one-three-hundred-thousandth as long as I-80
In other words, 49 feet is 0.00000322016 times the length of I-80, and the length of I-80 is 310,544 times that amount.(a.k.a. Interstate 80, a.k.a. Keystone Shortway) (net length)
Interstate 80, crosses the continent of North America from Teaneck, New Jersey to San Francisco, California and covers a total length of 15,216,600 feet. A 196,850 feet stretch between mile marker 318 in Grand Island, Nebraska and mile marker 390 in Lincoln, Nebraska is the longest straight path in the US Interstate system.
It's about one-four-hundred-thousandth as long as The Great Wall of China (wall only)
In other words, 49 feet is 0.000002386 times the length of The Great Wall of China (wall only), and the length of The Great Wall of China (wall only) is 419,100 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) (wall segments only)
The Great Wall of China has total wall segment length of 20,530,000 feet. 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.