It's about one-two-thousandth as tall as Olympus Mons.
In other words, 1,500 centimeters is 0.00056 times the height of Olympus Mons, and the height of Olympus Mons is 1,800 times that amount.(a.k.a. Mount Olympus) (Mars)
It's about one-six-thousandth as long as The Panama Canal.
In other words, 1,500 centimeters is 0.00017 times the length of The Panama Canal, and the length of The Panama Canal is 5,900 times that amount.(Canal de Panamá) (Panama)
It's about one-seven-thousandth as long as The English Channel.
In other words, 1,500 centimeters is 0.00014 times the length of The English Channel, and the length of The English Channel is 7,140 times that amount.(average width between Isle of Ushant and The Walde Lighthouse) (La Manche, Ärmelkanal, Mor Breizh, Mor Bretannek) (a.k.a. The Channel)
It's about one-seven-thousand-five-hundredth as long as Hadrian's Wall.
In other words, the length of Hadrian's Wall is 7,700 times 1,500 centimeters.(a.k.a. Roman Wall, a.k.a. The Wall, a.k.a. Vallo di Adriano, a.k.a. Vallum Aelium, a.k.a. Severus' Wall) (from North Tyneside, Tyne and Wear, England, United Kingdom to Cumbria, North West England, United Kingdom)
Hadrian's Wall, which crossed England form the North Sea to the Irish Sea during the time of Roman rule, measures 12,000,000 centimeters (about 79 Roman miles). Roman soldiers — at one time up to 10,000 of them — only occupied Great Britain for about 246 years after the wall was built, after which time the local Brits began to take residence the wall's garrisons.
It's about one-eight-thousandth as long as The 405.
In other words, 1,500 centimeters is 0.00012871 times the length of The 405, and the length of The 405 is 7,769.4 times that amount.(a.k.a. I-405, Interstate 405, San DIego Freeway) (Southern California)
It's about 9,000 times as long as a Strand of Spaghetti (thickness).
In other words, 1,500 centimeters is 8,800 times the length of a Strand of Spaghetti (thickness), and the length of a Strand of Spaghetti (thickness) is 0.00011 times that amount.(average; restaurant and supermarket applications) (based on FMA Omcan Italian Made TR50 Counter Top Pasta Machine Extruder 13317)
An average strand of restaurant-grade spaghetti measures 0.17 centimeters in thickness. In 2010, a California Buca di Beppo set a world record by preparing a 13,780-lb bowl of spaghetti, served in a swimming pool.
It's about 10,000 times as long as a Grain of Sand.
In other words, 1,500 centimeters is 12,000 times the length of a Grain of Sand, and the length of a Grain of Sand is 0.0000833 times that amount.(medium grain)