There are three in Canada that are sort of close to you:

Foothills Highland Games, August 27th. http://foothillshighlandgames.com/

Calgary Highland Games, September 3rd. http://calgaryhighlandgames.org/

Canmore Highland Games, September 4th. http://canmorehighlandgames.ca/


And if you're interested in another Highland event that isn't games the St. Andrew-Caledonian Society of Calgary is putting on a Scottish Cultural Gathering on October 7-10 in Canmore for it's second year. http://calgaryscots.org/