Grand Canyon
The Grand Canyon is a vast, steep-sided gorge carved by the Colorado River in northern Arizona, United States.
Also known as: Grand Canyon of the Colorado
How big is it?
446 km long
Also 277.1 mi
Canyon length · approximate
A little perspective
About the same scale as Mimas.
Mimas: Mimas is an icy moon of Saturn, visually dominated by the large Herschel impact crater.
Measurements, assumptions & sources +
Grand Canyon
Grand Canyon is approximately 446 km long. The measured line is a length comparison, not a route or a claim that the canyon follows a straight path.
US National Park Service — Grand Canyon facts
The marked canyon length is calibrated. Unmeasured illustration details are representative.
Mimas
Saturn’s moon Mimas is about 396 km across and dominated visually by Herschel crater. The diameter is a mean for an imperfect sphere.
NASA JPL — Planetary satellite physical parameters
The marked mean diameter is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 446 km
For comparison, this page uses canyon length. This is labelled approximate; the central value is useful for comparison, while real values or measurement solutions can vary.
Grand Canyon is approximately 446 km long. The measured line is a length comparison, not a route or a claim that the canyon follows a straight path.
The marked horizontal span follows the named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Grand Canyon dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 446 km | Not recorded | approximate |
Around this scale
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · PlacesRiver Thames346 kmThe River Thames is a major river in southern England that flows through London and empties into the North Sea.Around the same scale · TransportFive-hour drive at 100 km/h500 kmA five-hour drive at a set speed is the distance a vehicle covers in five hours of continuous travel without breaks.Nearest higher value · PlacesYarlung Tsangpo Grand Canyon504 kmThe Yarlung Tsangpo Grand Canyon is a deep river gorge in Tibet, following the Yarlung Tsangpo River through the Himalayas.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- US National Park Service — Grand Canyon factsGrand Canyon is approximately 277 miles (446 km) long.
There’s always another scale
Follow your curiosity.
PlacesYarlung Tsangpo Grand Canyon504 kmThe Yarlung Tsangpo Grand Canyon is a deep river gorge in Tibet, following the Yarlung Tsangpo River through the Himalayas.
SpaceMimas396.4 kmMimas is an icy moon of Saturn, visually dominated by the large Herschel impact crater.TransportFive-hour drive at 100 km/h500 kmA five-hour drive at a set speed is the distance a vehicle covers in five hours of continuous travel without breaks.
SpaceEnceladus504.2 kmEnceladus is a natural satellite of Saturn, with an icy surface and plumes of water vapour erupting from its south pole.
SpaceCharon1,212 kmCharon is a natural satellite of Pluto, composed mainly of rock and water ice.
Places10,000 km² region10,000 km²A region is a large expanse of land defined by geographical or administrative boundaries.
SpaceCeres939.4 kmCeres is a dwarf planet located in the asteroid belt between Mars and Jupiter.TransportOne-hour drive at 100 km/h100 kmA one-hour drive at a set speed is the distance a vehicle travels in one hour of uninterrupted motion.