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 driving distance between Denver, CO and Washington, DC is 1670 miles.  The driving time would be approximately 26 hours if driving non-stop in good conditions. (The driv â¦ ing time does not take into consideration conditions such as weather, road work and rush hour traffic in urban areas.).