Grizzly Peak is a high mountain summit in the Front Range of the Rocky Mountains of North America. Also known as Grizzly Peak D, the 13,433-foot thirteener is located in Arapaho National Forest, 2.1 miles southeast by east of Loveland Pass, Colorado, United States, on the Continental Divide between Clear Creek and Summit counties. Its proximate pareā¦Grizzly Peak is a high mountain summit in the Front Range of the Rocky Mountains of North America. Also known as Grizzly Peak D, the 13,433-foot thirteener is located in Arapaho National Forest, 2.1 miles southeast by east of Loveland Pass, Colorado, United States, on the Continental Divide between Clear Creek and Summit counties. Its proximate parent peak is Torreys Peak.