For those GD riders looking for cheap ($10 CAD) transportation between Calgary and Banff, On-It Regional Transit has scheduled a commuter service between Calgary and Banff again this year, including bike-friendly trips on select days/times.
http://www.onitregionaltransit.ca/banff-canmore-tickets/The only catch is that they pickup in Calgary at either a downtown location or a transit station in the northwest part of the city, and neither are particularly easy to reach from the Calgary International Airport by bike - so it might cost a $50 cab ride or some creative route-finding on a bike within the city.
https://maps.calgary.ca/PathwaysandBikeways/