Just mentioning this event. May be a bit too far for me but looks like a fun event. May 26-28. (May conflict with Paddlefest...).
www.northernforestcanoetrail.org

Not my favorite race event, but definitely worth doing a time or two, especially if you have a team to participate with.
Unfortunately I've heard the La Classique in Quebec isn't going to happen this year. Hopefully the canoe racing community in that area can make it happen again in the future.Part of The Tripe Crown Series.
General Clinton
The Au Sable River Canoe Marathon
La Classique internationale de canots de la Mauricie
One of these days it would be fun to head up north and race The Clinton.