Highway 2 is a major highway in Alberta, Canada, that stretches from the Canada–United States border through Alberta's largest cities, Calgary and Edmonton, to Grande Prairie. Running primarily north to south for approximately 1,273 kilometres (791 mi), it is the longest and busiest highway in Alberta, carrying more than 150,000 vehicles per day near Downtown Calgary. The Fort Macleod–Edmonton section forms a portion of the CANAMEX Corridor that links Alaska with Mexico; while the Donnelly–Grimshaw section forms a portion of the Arctic Corridor that links Edmonton with the Northwest Territories. More than half of Alberta's 5 million residents live in the Calgary–Edmonton Corridor created by Highway 2.