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.
Report Abuse. THey actually border each other over most of the east side of Denver..but if youre talking from downtown 8-10 miles. If from the airport, you actually go thru Aurora to get to Denver. Adam Â· 8 years ago.