The Grand Canyon is about 277 miles (446 km) long , up to 18 miles (29 km) wide , and more than a mile deep —roughly 6,000 feet (1,800 m) from rim to river.

Quick size snapshot

  • Length: 277 river‑miles along the Colorado River, from Lees Ferry to the Grand Wash Cliffs in northwestern Arizona.
  • Width: Varies from around 4 miles (6.4 km) at narrow points to up to 18 miles (29 km) at its widest spot near the North Rim.
  • Depth: Over 6,000 feet (≈1,800 m) from the rim down to the Colorado River, with some sources giving a maximum depth of about 6,093 feet (1,857 m).

Area and scale

  • The Grand Canyon National Park covers about 1,904 square miles (4,926 km²) , which is larger than the U.S. state of Rhode Island.
  • In everyday terms, you could fit entire states like Delaware or Rhode Island inside the canyon’s footprint if you “flattened” its area.

Visualizing the size

  • From the South Rim, the canyon can look like a narrow crack , but once you step back or view it from above, the full 10–18‑mile span becomes obvious.
  • The Colorado River at the bottom appears tiny, which is part of what makes the scale so hard to grasp until you’re standing on the rim.

Information gathered from public forums or data available on the internet and portrayed here.