It's about half as tall as The Challenger Deep (Marianas Trench).
In other words, 25.8490 furlongs is 0.476980 times the height of The Challenger Deep (Marianas Trench), and the height of The Challenger Deep (Marianas Trench) is 2.0965 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 54.1940 furlongs 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 two times as long as Steel Dragon 2000.
In other words, 25.8490 furlongs is 2.098 times the length of Steel Dragon 2000, and the length of Steel Dragon 2000 is 0.47660 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 12.320 furlongs in length. It is one of only two operating "Gigacoasters" (meaning its height is between 0.45450 furlongs and 0.60450 furlongs) in the world, having a height of 0.48220 furlongs.
It's about half as tall as Maxwell Montes.
In other words, 25.8490 furlongs is 0.470 times the height of Maxwell Montes, and the height of Maxwell Montes is 2.10 times that amount.(Ishtar Terra, Venus)
Maxwell Montes rises to a total height of 55 furlongs. 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 Belmont Stakes.
In other words, 25.8490 furlongs is 2.1540830 times the length of The Belmont Stakes, and the length of The Belmont Stakes is 0.46423470 times that amount.(Belmont Park, Elmont, New York) (total race length)
The total race length of the Belmont Stakes run at Belmont Park is 12 furlongs. It was during the 1974 Belmont Stakes that Secretariat set an America Grade 1 stakes record in winning by a distance of about 0.37575760 furlongs
It's about two-and-a-half times as long as The Beast (Roller Coaster).
In other words, 25.8490 furlongs is 2.3180 times the length of The Beast (Roller Coaster), and the length of The Beast (Roller Coaster) is 0.43140 times that amount.(King's Island Amusement Park; Mason, OH)
The roller coaster The Beast is 11.150 furlongs 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 two-and-a-half times as long as The Kentucky Derby.
In other words, 25.8490 furlongs is 2.58490 times the length of The Kentucky Derby, and the length of The Kentucky Derby is 0.3868620 times that amount.(Churchill Downs, Louisville, Kentucky) (total race length)
The total race length of the Kentucky Derby run at Churchill Downs is 10 furlongs. 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-and-a-half times as long as The Preakness Stakes.
In other words, 25.8490 furlongs is 2.7209470 times the length of The Preakness Stakes, and the length of The Preakness Stakes is 0.36751910 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 9.5 furlongs. 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.