Castle Mountain is a ski resort located in the Westcastle Valley of southwest Alberta, Canada in the Rocky Mountains. It is approximately 270 kilometres from Calgary and the Calgary International Airport; 140 kilometres from Lethbridge; and 50 kilometres west of Pincher Creek. The resort is renowned for long steep runs and an average 9 metres of sn…Castle Mountain is a ski resort located in the Westcastle Valley of southwest Alberta, Canada in the Rocky Mountains. It is approximately 270 kilometres from Calgary and the Calgary International Airport; 140 kilometres from Lethbridge; and 50 kilometres west of Pincher Creek. The resort is renowned for long steep runs and an average 9 metres of snowfall yearly.