It's about three-fifths as long as The Las Vegas Strip
In other words, 3,900 meters is 0.570 times the length of The Las Vegas Strip, and the length of The Las Vegas Strip is 1.80 times that amount.(Las Vegas Boulevard S and W from Russel Rd to Sahara Ave)(Paradise, Nevada through Winchester, Nevada).
Although technically located beyond the city limits of Las Vegas (along with the well-known "Welcome to Fabulous Las Vegas" sign), the stretch of road known as the "Las Vegas Strip" runs 6,800 meters along Las Vegas Boulevard South and West from Russel Road at the south end to Sahara Avenue at the north end. The casinos and hotels on the Strip display an estimated total of 24,000,000 meters of neon light tubing.
It's about three-fifths as tall as Aconcagua
In other words, 3,900 meters is 0.560190 times the height of Aconcagua, and the height of Aconcagua is 1.78510 times that amount.(a.k.a. Cerro Aconcagua) (Mendoza, Argentina)
Aconcagua measures 6,961.9 m height at its peak. Although there is no definitive evidence that members of the indigenous Inca civilization ever reached the peak the mountain, numerous archeological sites have been found on the slopes of the mountain, including a naturally-embalmed Incan mummy was discovered on a 5,200 m high ridge.
It's about one-and-nine-tenths times as long as The Kentucky Derby
In other words, 3,900 meters is 1.938680 times the length of The Kentucky Derby, and the length of The Kentucky Derby is 0.5158150 times that amount.(Churchill Downs, Louisville, Kentucky) (total race length)
The total race length of the Kentucky Derby run at Churchill Downs is 2,011.680 meters. First run in 1864, the Kentucky Derby is one of the oldest continuously-running sporting events in America, almost two years older than the Westminster Kennel Club Dog Show
It's about two times as long as The Preakness Stakes
In other words, 3,900 meters is 2.040714 times the length of The Preakness Stakes, and the length of The Preakness Stakes is 0.49002460 times that amount.(Pimlico Race Course, Baltimore, Maryland) (total race length)
The total race length of the Preakness Stakes run at the Pimlico Race Course is 1,911.096 meters. Dubbed "the race for the Black-eyed Susans" after Maryland's state flower, the winning horse is actually draped with a garland of painted yellow daisies, as Black-eyed Susans do not bloom in time for the late-May race.
It's about two-fifths as tall as Mount Everest
In other words, 3,900 meters is 0.4410 times the height of Mount Everest, and the height of Mount Everest is 2.270 times that amount.(a.k.a. Mount Chomolungma, a.k.a. Sagarmatha, a.k.a. Mount Qomolangma, a.k.a. सगरमाथा, a.k.a. Chajamlungma, a.k.a. ཇོ་མོ་གླང་མ, a.k.a. 珠穆朗玛峰, a.k.a. Zhūmùlǎngmǎ Fēng) (Sagarmatha Zone, Nepal and Tibet, China) (to summit, excluding snow depth)
Mount Everest is 8,850 m above sea level at its summit. The plate tectonics of the Indian subcontinent continuously alter the mountain's peak â€” raising it by 0.004 meters and shifting it to the northeast by 0.0045 meters each year.
It's about two-fifths as tall as a Mauna Loa
In other words, 3,900 meters is 0.42540 times the height of a Mauna Loa, and the height of a Mauna Loa is 2.3510 times that amount.(Hawaii) (Hawaiian island volcano) (total height from seafloor)
Mauna Loa, one of the five volcanoes which forms the island of Hawaii and the tallest mountain in total height in the world, rises to 9,168 m above the seafloor. The peak of Loa is home to the approximately 6,000 sq. m (0.6 ha) Lake Waiau, one of the highest altitude lakes in the United States outside of Colorado.
It's about one-third as tall as The Challenger Deep (Marianas Trench)
In other words, 3,900 meters is 0.357730 times the height of The Challenger Deep (Marianas Trench), and the height of The Challenger Deep (Marianas Trench) is 2.79540 times that amount.(near Marianas Islands, a.k.a. Ladrones Islands, northwestern Pacific Ocean) (depth below sea level)
The Challenger Deep, at the southern end of the Marianas Trench, reaches a depth of 10,902 meters below sea level. There has been only one manned expedition to the bottom of Challenger Deep — a 1960 voyage that took 4 hours and 48 minutes to reach the bottom.