How long is 31 metres?
31 metres is easier to picture beside familiar, measured objects, venues, vehicles, and landmarks.
31-Metre Distance Comparisons
31 metres is about 50% of the length of Concorde.
The comparison uses the published dimension, converted into the same unit before the proportion is calculated.
Source: Royal Air Force Museum
31 metres is about 1.1 times the length of a FIBA basketball court.
Its published measurement is 28 metres; the ratio is calculated from that figure.
Source: FIBA
For scale, 31 metres is about 37% of the height of the General Sherman tree.
Its published measurement is 83.8 metres; the ratio is calculated from that figure.
Source: National Park Service
Measured against the typical upper length of an adult blue whale, 31 metres spans almost exactly the same distance as that reference.
The comparison uses the published dimension, converted into the same unit before the proportion is calculated.
Source: NOAA Fisheries
For scale, 31 metres is about 61% of the height of the Arc de Triomphe.
Using the source measurement of 50.6 metres, this comparison puts the target at 61% of it.
Source: Centre des monuments nationaux
Measured against the height of the completed Tower of Jesus Christ, 31 metres spans about 18% of that reference.
The comparison uses the published dimension, converted into the same unit before the proportion is calculated.
Source: Official Sagrada Família site
For scale, 31 metres is about 5.6 times the depth of a football goal area.
Using the source measurement of 5.5 metres, this comparison puts the target at 5.6 of it.
Source: FIFA
31 metres is approximately 101.7 feet.
Using the exact conversion that 1 metre equals exactly 3.280839895 feet, the unrounded result is 101.706 feet.
Reference measurements are rounded where appropriate, and naturally variable objects are described as approximate, typical, or maximum sizes.
