It's about 200,000 times as tall as a sheet of Paper
In other words, 67 spans is 200,000 times the height of a sheet of Paper, and the height of a sheet of Paper is 0.0000050 times that amount.(for US Letter, a.k.a. ANSI A; 215.9mm by 279.4mm (8.5 in x 11 in); 20lb)
A single sheet of 20 lb, 8.5 inch x 11 inch paper is just 0.0004 spans thick. This style of paper weighs a mere 5 g per sheet.
It's about one-two-hundred-fifty-thousandth as long as The Oregon Trail
In other words, 67 spans is 0.00000439 times the length of The Oregon Trail, and the length of The Oregon Trail is 228,000 times that amount.(from Independence, Missouri to Oregon City, Oregon)
The historic Oregon Trail stretched 15,300,000 spans 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, 67 spans is 0.00000434 times the length of The Volga, and the length of The Volga is 230,000 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 15,400,000 spans 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, 67 spans is 0.000004067 times the length of The Mississippi River, and the length of The Mississippi River is 245,900 times that amount.(from Lake Itasca, Minnesota through Pilottown, Plaquemines Parish, Louisiana)
The total length of the Mississippi River is 16,470,000 spans. 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, 67 spans is 0.00000341 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 293,000 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 19,600,000 spans 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, 67 spans is 0.00000330231 times the length of I-80, and the length of I-80 is 302,818 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 20,288,800 spans. A 262,467 spans 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, 67 spans is 0.000002447 times the length of The Great Wall of China (wall only), and the length of The Great Wall of China (wall only) is 408,700 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 27,380,000 spans. 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.