How long is 520 feet?
Instead of treating 520 feet as an abstract number, compare it with the recognizable measurements collected below.
520-Foot Distance Comparisons
520 feet is about 72% of the height of Hoover Dam.
Hoover Dam rises 726 feet from its foundation in Black Canyon and holds back the Colorado River to form Lake Mead. Its published measurement is 726 feet; the comparison comes from placing that figure against 520 feet.
Source: U.S. Bureau of Reclamation
Measured against the length of a regulation tennis court, 520 feet is about 6.7 times that reference length.
The International Tennis Federation sets the court at 78 feet from baseline to baseline for both singles and doubles play. Using its published size of 78 feet, dividing 520 by that reference gives 6.7 of those measurements.
Source: International Tennis Federation
For scale, 520 feet spans about 8.7 times the maximum length of a humpback whale.
NOAA describes adult humpback whales as reaching lengths of approximately 60 feet in some populations. The source measurement converts to 60 feet, so the proportional comparison with 520 feet is 8.7 of those measurements.
Source: NOAA Fisheries
Measured against the height of the Leaning Tower of Pisa, 520 feet is about 2.8 times that reference length.
The Leaning Tower of Pisa reaches approximately 183.5 feet on its taller side above the cathedral square. At 183.5 feet, this familiar reference provides a direct scale comparison: the target distance covers 2.8 of those measurements.
Source: Opera della Primaziale Pisana
A 520-foot distance works out to about 2 times the wingspan of an Airbus A380.
The Airbus A380's enormous wings span 79.75 metres, equal to approximately 260.3 feet from tip to tip. Using its published size of 260.33 feet, dividing 520 by that reference gives 2 of those measurements.
Source: Airbus
A 520-foot distance works out to about 195 times the minimum clear width of an accessible doorway.
U.S. accessibility standards generally require at least 32 inches of clear passage width when an accessible door is opened. Using its published size of 2.67 feet, dividing 520 by that reference gives 195 of those measurements.
Source: U.S. Access Board
A 520-foot distance works out to about 2.1 times the length of a Boeing 747-8.
The Boeing 747-8 measures approximately 250 feet 2 inches from its distinctive nose to its tail. At 250.17 feet, this familiar reference provides a direct scale comparison: the target distance covers 2.1 of those measurements.
Source: Boeing
520 feet is approximately 158.5 meters.
Using the exact conversion that 1 foot equals exactly 0.3048 meters, the unrounded result is 158.496 meters.
Reference measurements are rounded where appropriate, and naturally variable objects are described as approximate, typical, or maximum sizes.
