Jump on the Deerfoot Trail road and head north for 3 hours.
You could rent a car, but you have to drop it off at the same location, otherwise you pay a pretty large fee ($200 or so). Or, you can grab a Greyhound or Red Arrow bus. Or, you can check out some ride-sharing websites and see if you can hook up with someone driving up to Edmonton and share the cost of gas ($20-30).
As an alternative, you could just fly into Edmonton, instead of Calgary. almost 10 years ago