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.
The CDP is bordered to the west by Pike National Forest, and Roxborough State Park, known for its dramatic sandstone formations, is on the southern edge of the community. Downtown Denver is 25 miles (40 km) to the northeast.