Jump / Marianne Ackerman -- I've had a copy of this book, set in Montreal, on my shelves since I lived in Montreal, so I think it is time to read it!
Fever / Sharon Butala -- either this or another of her short story collections set mostly in Saskatchewan; I could count it toward the Short Story challenge as well!
Rogue Wedding / Terry Griggs -- this starts off just down the road in London, Ontario, and looks like a lively, entertaining read, written by an author I've been lucky enough to meet.
The Valley / Gayle Friesen -- I've enjoyed her YA novels, and this first adult novel, set in BC and talking about growing up in a Mennonite family, intrigues me.
I'll have to think about a few more for the other provinces, and I am sure that the new fall lists will provide me with even more inspiration. But this is my current working list. I just love Challenges! :)