The northern part of the range, north of Mount Rainier, is known as the North Cascades in the United States but is formally named the Cascade Mountains north of the CanadaâUnited States border, reaching to the northern extremity of the Cascades at Lytton Mountain.
The perimeter of Washington Park in Denver, CO is about 2.60 miles.
â¢ Area: 789 square miles (2,043 sq km) â¢ Location: Washington. â¢ Year of Formation: 1968. To learn more about National Parks in the United States, visit the official website of the National Park Service.