It's about one-sixty-five-thousandth as long as The Kentucky Derby
In other words, 3 centimeters is 0.00001491290 times the length of The Kentucky Derby, and the length of The Kentucky Derby is 67,056 times that amount.(Churchill Downs, Louisville, Kentucky) (total race length)
The total race length of the Kentucky Derby run at Churchill Downs is 201,168 centimeters. 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-seventy-five-thousandth as long as The Beast (Roller Coaster)
In other words, 3 centimeters is 0.000013370 times the length of The Beast (Roller Coaster), and the length of The Beast (Roller Coaster) is 74,790 times that amount.(King's Island Amusement Park; Mason, OH)
The roller coaster The Beast is 224,300 centimeters 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-eighty-thousandth as long as The Belmont Stakes
In other words, 3 centimeters is 0.000012427420 times the length of The Belmont Stakes, and the length of The Belmont Stakes is 80,467.220 times that amount.(Belmont Park, Elmont, New York) (total race length)
The total race length of the Belmont Stakes run at Belmont Park is 241,401.60 centimeters. It was during the 1974 Belmont Stakes that Secretariat set an America Grade 1 stakes record in winning by a distance of about 7,559.04 centimeters
It's about one-eighty-five-thousandth as long as Steel Dragon 2000
In other words, the length of Steel Dragon 2000 is 82,640 times 3 centimeters.(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 247,900 centimeters in length. It is one of only two operating "Gigacoasters" (meaning its height is between 9,144 centimeters and 12,160 centimeters) in the world, having a height of 9,700 centimeters.
It's about one-one-hundred-thousandth as long as The National Mall
In other words, 3 centimeters is 0.00001000 times the length of The National Mall, and the length of The National Mall is 100,000 times that amount.(Washington, D.C.) (to Lincoln Memorial)
From the steps of the Capitol Building to the Lincoln Memorial, the National Mall is 300,000 centimeters. 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 one-one-hundred-fifty-thousandth as long as The Hollywood Walk of Fame
In other words, the length of The Hollywood Walk of Fame is 130,000 times 3 centimeters.(Hollywood Boulevard and Vine Street, Hollywood, California) (approximate length)
The Hollywood Walk of Fame is approximately 390,000 centimeters. Gene Autry, most famous as the singer of "Back in the Saddle Again" and as the writer and singer of "Here Comes Santa Claus," is the only entertainer to have a star in every category — film, television, recording, radio, and theater. One of Autry's stars is also one of only two stars which have been stolen from the Walk and never recovered.
It's about one-one-hundred-fifty-thousandth as long as The Indianapolis Motor Speedway
In other words, 3 centimeters is 0.000007456450 times the length of The Indianapolis Motor Speedway, and the length of The Indianapolis Motor Speedway is 134,112 times that amount.(Speedway, Indiana) (rectangular oval course)
The rectangular oval course of the Indianapolis Motor Speedway is 402,336 centimeters. While famous for its automotive racing, the first motorsport held at the track was a series of motorcycle races in August, 1909 — a little less than two years before the inaugural Indianapolis 500 race was run.