how many feet in a mile is the grand canyon
Best Answer: According to the National Park Service website, the Canyon, incised by the Colorado River, is immense, averaging 4,000 feet deep for its entire 277 miles. It is 6,000 feet deep at its deepest point and 15 miles at its widest. Source(s): http://www.nps.gov/grca/naturescience/in... The canyon is 277 miles (446 km) long, ranges in width from 4 to 18 miles (6.4 to 29 km) and attains a depth of more than a mile (1.6 km). Take a jump down and see for yourself.