It's about three-fifths as tall as The Challenger Deep (Marianas Trench)
In other words, 6.2590 kilometers is 0.574110 times the height of The Challenger Deep (Marianas Trench), and the height of The Challenger Deep (Marianas Trench) is 1.74180 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 km 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.
It's about three-fifths as tall as Maxwell Montes
In other words, 6.2590 kilometers is 0.570 times the height of Maxwell Montes, and the height of Maxwell Montes is 1.80 times that amount.(Ishtar Terra, Venus)
Maxwell Montes rises to a total height of 11 km. Since Venus does not seem to have the kind of tectonic activity which gives rise to mountains on Earth, the origin of the Venusian mountain remains the subject of some dispute.
It's about two times as long as The National Mall
In other words, the length of The National Mall is 0.50 times 6.2590 kilometers.(Washington, D.C.) (to Lincoln Memorial)
From the steps of the Capitol Building to the Lincoln Memorial, the National Mall is 3.0 km. On December 4th, 2008, the entirety of the Mall was declared open to the public for the first time in American history in anticipation of the estimated two million visitors to the Mall for the inauguration of President Barack Obama on January 20th, 2009.
It's about two-and-a-half times as long as Steel Dragon 2000
In other words, 6.2590 kilometers is 2.5250 times the length of Steel Dragon 2000, and the length of Steel Dragon 2000 is 0.3960 times that amount.(a.k.a. スチールドラゴン2000) (Nagashima Span Land; Kuwana, Mie Prefecture, Japan)
The roller coaster Steel Dragon 2000 is 2.4790 kilometers in length. It is one of only two operating "Gigacoasters" (meaning its height is between 0.09144 kilometers and 0.12160 kilometers) in the world, having a height of 0.097 kilometers.
It's about two-and-a-half times as long as The Belmont Stakes
In other words, 6.2590 kilometers is 2.5927750 times the length of The Belmont Stakes, and the length of The Belmont Stakes is 0.38568710 times that amount.(Belmont Park, Elmont, New York) (total race length)
The total race length of the Belmont Stakes run at Belmont Park is 2.4140160 kilometers. It was during the 1974 Belmont Stakes that Secretariat set an America Grade 1 stakes record in winning by a distance of about 0.0755904 kilometers
It's about three times as long as The Beast (Roller Coaster)
In other words, 6.2590 kilometers is 2.790 times the length of The Beast (Roller Coaster), and the length of The Beast (Roller Coaster) is 0.35840 times that amount.(King's Island Amusement Park; Mason, OH)
The roller coaster The Beast is 2.2430 kilometers in length. On its twenty-fifth year of operation in 2004, The Beast was awarded the Landmark Award by the American Coaster Enthusiasts as a historically significant roller coaster.
It's about three times as long as The Kentucky Derby
In other words, 6.2590 kilometers is 3.111330 times the length of The Kentucky Derby, and the length of The Kentucky Derby is 0.3214060 times that amount.(Churchill Downs, Louisville, Kentucky) (total race length)
The total race length of the Kentucky Derby run at Churchill Downs is 2.01168 kilometers. 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