It's about one-six-hundred-thousandth as long as The Great Wall of China (total).
In other words, 1,500 centimeters is 0.00000169 times the length of The Great Wall of China (total), and the length of The Great Wall of China (total) is 592,000 times that amount.(长城, 長城, Chángchéng, a.k.a. 万里长城, 萬里長城, Wànlǐ Chángchéng) (a.k.a. "The long wall of 10,000 Li") (from Shanhaiguan through Lop Nur, China) (total length, all branches)
It's about 2,000,000 times as long as a Red Blood Cell.
In other words, the length of a Red Blood Cell is 0.0000005 times 1,500 centimeters.(a.k.a. RBCs, a.k.a. haematids, a.k.a. erythrocyte, a.k.a. erythroid cells, a.k.a. red blood corpuscles) An average Red Blood Cell measures 7.5 µm (micrometers) in diameter. An average human has 20 - 30 trillion red blood cells in their body and each cell completes a circulatory lap in about 20 seconds.
It's about 2,500,000 times as long as a Nucleus (Cellular).
In other words, the length of a Nucleus (Cellular) is 0.0000004 times 1,500 centimeters.(for animal cell)
It's about 7,500,000 times as long as an E. coli Bacterium.
In other words, the length of an E. coli Bacterium is 0.00000013 times 1,500 centimeters.(Escherichia coli) (rod-shaped configuration)
It's about 8,000,000 times as long as a Mitochondrion.
In other words, 1,500 centimeters is 7,980,000 times the length of a Mitochondrion, and the length of a Mitochondrion is 0.000000125 times that amount.(Eukaryotic; average)
It's about 0.00000004 times as long as The Distance from Earth to the Moon.
In other words, 1,500 centimeters is 0.00000003901815 times the length of The Distance from Earth to the Moon, and the length of The Distance from Earth to the Moon is 25,629,100 times that amount.(a.k.a. Luna) (median of semi-major axis, or apigee, and semi-minor axes, or perigee)
It's about 10,000,000,000 times as long as a Glucose Molecule.
In other words, the length of a Glucose Molecule is 0.0000000001 times 1,500 centimeters.(C6H12O6, a.k.a. grape sugar) (open chain form)
Am individual glucose molecule measures 0.00000015 centimeters in its open-chain form. Glucose is the most common fuel source of energy in human biology, with 3.75 kilocalories of energy per gram.