The Lake Louise to Banff section of the Banff National Park 1A route is also known as the Bow Valley Parkway. It begins at Highway 1 at Lake Louise, generally paralleling it until it meets Highway 1 again approximately west of Banff. It provides more immediate access to attractions in Banff National Park such as Castle Mountain and Johnston Canyon. This spur has a reduced speed limit of , and provides opportunities to view wildlife at various times of the year.