Kevin Kennedy, 59, vanished after he was dropped off at Highwood Pass in Kananaskis.
Kennedy had plans to hike the Tyrwitt Loop but failed to meet his ride at the end of the day.
An extensive search involving not only RCMP, but conservation officers and search and rescue teams from Calgary and Cochrane have failed to turn up any clues.
Kennedy is described as white, six-feet tall, 170 pounds with grey, thinning hair, glasses and an Australian accent.
He was last seen wearing a light blue shirt, khaki shorts, brown/orange fleece, dark coloured hat, blue backpack and carrying a navy blue rain coat.
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