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.
This claim is disputed since Winter Park has no residences above 9,550 feet (2,910 m), while contiguous residential neighborhoods in Leadville, Colorado, extend to 10,360 feet (3,160 m) and in Alma, Colorado, to 11,680 feet (3,560 m), and Alma's town center is at 10,361 feet (3,158 m).