It's about 350 times as long as a Cricket Pitch
In other words, 6.920 kilometers is 343.991 times the length of a Cricket Pitch, and the length of a Cricket Pitch is 0.0029071 times that amount.(per Marylebone Cricket Council / International Cricket Council Law #6)
The length of a cricket pitch, from one bowling crease to the other, is 0.0201168 kilometers. The wickets at either end of the pitch stand 0.00072 kilometers tall including the bails.
It's about 350 times as long as a Bowling Lane
In other words, 6.920 kilometers is 361.24 times the length of a Bowling Lane, and the length of a Bowling Lane is 0.002768 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 0.019156 kilometers. In a Professional Bowling Association game, the lane must be lubricated by about 25 ml (0.85 fl. oz) of oil.
It's about one-four-hundredth as long as The Danube
In other words, 6.920 kilometers is 0.0024 times the length of The Danube, and the length of The Danube is 412 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 2,850 km 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 450 times as tall as The Hollywood Sign
In other words, 6.920 kilometers is 460 times the height of The Hollywood Sign, and the height of The Hollywood Sign is 0.002 times that amount.(a.k.a. Hollywoodland Sign) (Mount Lee, Hollywood Hills, Santa Monica Mountains, California)
Each of the white letters in the Hollywood Sign measures 0.015 kilometers tall. Built as an advertisement in 1923, the sign was intended to stand for only eighteen months.
It's about 450 times as long as a Semitrailer
In other words, 6.920 kilometers is 473 times the length of a Semitrailer, and the length of a Semitrailer is 0.00211 times that amount.(a.k.a. semi-trailer truck, a.k.a. semi, a.k.a. tractor-trailer, a.k.a. truck and trailer, a.k.a. eighteen-wheeler, a.k.a. big rig, a.k.a. Mack truck, a.k.a. transport, a.k.a. lorry, a.k.a. artic; for box truck; United States Federal length limits)
According to the United States Department of Transportation (DOT), the maximum allowable length of a semitrailer pulled by a road tractor truck is 0.01463 kilometers (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.
It's about one-five-hundredth as long as The Oregon Trail
In other words, 6.920 kilometers is 0.0020 times the length of The Oregon Trail, and the length of The Oregon Trail is 505 times that amount.(from Independence, Missouri to Oregon City, Oregon)
The historic Oregon Trail stretched 3,490 km 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-five-hundredth as long as The Volga
In other words, 6.920 kilometers is 0.0020 times the length of The Volga, and the length of The Volga is 510 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 3,530 km 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.