There's the built in stuff in 2010, but you can also get some of those routes on www.rrmods.com
On the DLS there is the Toronto Lakeshore West by Neilsmith749? which runs on CN tracks and Brampton - Unfinished by myself, which is not very large or finished, but is CN trackage through Brampton (a suburb of Toronto).
There may be other routes too but these were the first that came to mind.
I am Kinda all tried out on reskining and just want to run trains.
Does anyone know of a good CN GP38?
Never mind. Found a GP35. I just needed a middle of the road loco.