The Grand Canyon is 18 miles at its widest point, compared to a mere 600 feet at its narrowest point. This measurement is nearly double its average width, which is 10 miles.
The Grand Canyon is a 277 mile long gorge located in northwest Arizona. It was formed by erosion of the Colorado River on the upraised earth's crust.
The Grand Canyon has an average depth of 1 mile.
The Colorado River divides the Grand Canyon National Park between the North Rim and South Rim. These two points contain the Grand Canyon's width, the dimensions of which are stated above.