A Grizzly Bear (Ursus arctos horribilis) wandering in Denali National Park, Alaska during the autumn. The Grizzly Bear is the common name for a Brown Bear, found in the North America. They reach weights of 180-680 kg (400-1,500 lb) and are colored blond to deep brown or black. In spite of their massive size, these bears can run at speeds of up to 55 km/h (35 mph). The current range of the Grizzly Bear extends from Alaska, down through much of Western Canada, and into the upper Northwestern United States including Idaho, Montana and Wyoming.