I'm hoping to get myself ready for a trip from someplace west of Ottawa to Sault Ste. Marie by the end of summer... looks like Kings HWY 17 will be my best bet. In my reading, I came across this site:

http://transcanadahighway.com/Ontario/index.htm

I came across it a couple of months back when I was googling something along the lines of bicycle canada highway when I was looking for laws/regulations regarding the use of a bicycle on Hwy 17