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How long is 4.02 kilometers?

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It's about 3,000,000 times as long as a Grain of Sand.
In other words, 4.02 kilometers is 3,220,000 times the length of a Grain of Sand, and the length of a Grain of Sand is 0.0000003110 times that amount.
(medium grain)
Composed mainly of quartz, mica, feldspar, or magnetite, a grain of sand measures an average of 0.000001250 kilometers. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 0.0151 kilometers in height.
It's about 40,000,000 times as tall as a sheet of Paper.
In other words, the height of a sheet of Paper is 0.0000000300 times 4.02 kilometers.
(for US Letter, a.k.a. ANSI A; 215.9mm by 279.4mm (8.5 in x 11 in); 20lb)
A single sheet of 20 lb, 8.5 inch x 11 inch paper is just 0.0000001000 kilometers thick. This style of paper weighs a mere 5 g per sheet.
It's about 40,000,000 times as long as a Strand of Hair.
In other words, 4.02 kilometers is 41,000,000 times the length of a Strand of Hair, and the length of a Strand of Hair is 0.0000000240 times that amount.
(average)
A strand of human hair averages 99 µm (micrometers), with blond hair being the finest and black hair the thickest. On a healthy scalp, each strand of hair will last up to 6 years.
It's about 40,000,000 times as tall as a Human hair, Strand of.
In other words, 4.02 kilometers is 41,000,000 times the height of a Human hair, Strand of, and the height of a Human hair, Strand of is 0.0000000240 times that amount.
(average)
A strand of human hair averages 99 µm (micrometers), with blond hair being the finest and black hair the thickest. On a healthy scalp, each strand of hair will last up to 6 years.
It's about 550,000,000 times as long as a Red Blood Cell.
In other words, the length of a Red Blood Cell is 0.00000000190 times 4.02 kilometers.
(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 650,000,000 times as long as a Nucleus (Cellular).
In other words, the length of a Nucleus (Cellular) is 0.00000000150 times 4.02 kilometers.
(for animal cell)
The nucleus of an animal cell measures an average of 0.00000000600 kilometers. The nucleus is the largest organelle in these cells, accounting for about 10% of the cell's total volume.
It's about 2,000,000,000 times as long as an E. coli Bacterium.
In other words, the length of an E. coli Bacterium is 0.000000000500 times 4.02 kilometers.
(Escherichia coli) (rod-shaped configuration)
An rod-shaped E. coli bacterium measures about 0.00000000200 kilometers in length. A staple of biology labs, E. coli can reproduce in as little as twenty minutes.