It's about 300 times as long as an Aspirin
In other words, 13 feet is 280 times the length of an Aspirin, and the length of an Aspirin is 0.004 times that amount.(for up & up aspirin, 325mg, regular strength tablets) (a.k.a. acetylsalicylic acid, a.k.a. ASA)
A single aspirin tablet measures 0.046 feet in diameter. One of the most common medicines in the world and a foundation of worldwide health systems, an estimated 40,000 metric tons of aspirin are consumed each year.
It's about one-five-hundredth as long as The Preakness Stakes
In other words, 13 feet is 0.00207337 times the length of The Preakness Stakes, and the length of The Preakness Stakes is 482.3077 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 6,270 feet. 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-five-hundredth as long as The Kentucky Derby
In other words, 13 feet is 0.001970 times the length of The Kentucky Derby, and the length of The Kentucky Derby is 507.692 times that amount.(Churchill Downs, Louisville, Kentucky) (total race length)
The total race length of the Kentucky Derby run at Churchill Downs is 6,600 feet. 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-five-hundred-fiftieth as long as The Beast (Roller Coaster)
In other words, 13 feet is 0.00177 times the length of The Beast (Roller Coaster), and the length of The Beast (Roller Coaster) is 565.9 times that amount.(King's Island Amusement Park; Mason, OH)
The roller coaster The Beast is 7,359 feet 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 one-six-hundredth as long as The Belmont Stakes
In other words, 13 feet is 0.00164141 times the length of The Belmont Stakes, and the length of The Belmont Stakes is 609.2308 times that amount.(Belmont Park, Elmont, New York) (total race length)
The total race length of the Belmont Stakes run at Belmont Park is 7,920 feet. It was during the 1974 Belmont Stakes that Secretariat set an America Grade 1 stakes record in winning by a distance of about 248 feet
It's about one-six-hundred-fiftieth as long as Steel Dragon 2000
In other words, 13 feet is 0.00160 times the length of Steel Dragon 2000, and the length of Steel Dragon 2000 is 625.8 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 8,133 feet in length. It is one of only two operating "Gigacoasters" (meaning its height is between 300 ft and 399 ft) in the world, having a height of 318.20 feet.
It's about one-one-thousandth as long as The National Mall
In other words, 13 feet is 0.00 times the length of The National Mall, and the length of The National Mall is 1,000 times that amount.(Washington, D.C.) (to Lincoln Memorial)
From the steps of the Capitol Building to the Lincoln Memorial, the National Mall is 10,000 feet. 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.