It's about one-three-hundred-fiftieth as tall as Burj Dubai
In other words, 40 nails is 0.00276 times the height of Burj Dubai, and the height of Burj Dubai is 362 times that amount.(formally Burj Khalifa, a.k.a. Dubai Tower, a.k.a. برج خليفة) (Dubai, UAE) (to roof)
Burj Khalifa, the tallest manmade structure in the world, stands 14,500 nails to its roof. The tower also holds the current records for the world's highest Islamic mosque — at approximately 10,100 nails on the 158th floor (of 163 floors) — and the world's tallest outdoor swimming pool — at approximately 4,990 nails on the 78th floor.
It's about one-four-hundredth as tall as Olo'upena Falls
In other words, 40 nails is 0.00254 times the height of Olo'upena Falls, and the height of Olo'upena Falls is 393.70 times that amount.(a.k.a. Oloupena Falls) (Molokai, Hawaii)
Olo'upena Falls rise to 15,750 nails in height. The isolated falls are the tallest in the United States and the fourth tallest in the world.
It's about one-four-hundredth as tall as Tugela Falls
In other words, 40 nails is 0.00241 times the height of Tugela Falls, and the height of Tugela Falls is 415 times that amount.(Royal Natal National Park, KwaZulu-Natal, South Africa)
Tugela Falls rises to 16,600 nails in height. The falls are the highest in Africa and the second highest in the world.
It's about one-four-hundred-fiftieth as tall as Angel Falls
In other words, 40 nails is 0.00234 times the height of Angel Falls, and the height of Angel Falls is 427 times that amount.(a.k.a. Parakupa-vena, a.k.a. Kerepakupai mer&) (Auyantepui, Canaima National Park, Venezuela) (total height)
Angel Falls has a total height 17,100 nails. Jimmie Angel, the first person to publicize their existence outside Venezuela and the namesake of the falls, damaged his monoplane atop the falls and was forced to abandon it; it remained there until it was removed 33 years later.
It's about one-eight-hundred-fiftieth as long as The Preakness Stakes
In other words, 40 nails is 0.001196172 times the length of The Preakness Stakes, and the length of The Preakness Stakes is 836.0002 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 33,440 nails. 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 one-nine-hundredth as long as The Kentucky Derby
In other words, 40 nails is 0.00113636 times the length of The Kentucky Derby, and the length of The Kentucky Derby is 880.003 times that amount.(Churchill Downs, Louisville, Kentucky) (total race length)
The total race length of the Kentucky Derby run at Churchill Downs is 35,200 nails. 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 one-one-thousandth as long as The Beast (Roller Coaster)
In other words, 40 nails is 0.001019 times the length of The Beast (Roller Coaster), and the length of The Beast (Roller Coaster) is 981.40 times that amount.(King's Island Amusement Park; Mason, OH)
The roller coaster The Beast is 39,250 nails 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.