[identity profile] james-nicoll.livejournal.com 2009-04-16 03:57 pm (UTC)(link)
The rule of thumb the NOer used was that anyplace that was within a four hour drive of Toronto was not really Northern Ontario. I think he also said NO is really only the bits north of 50.

[identity profile] joenotcharles.livejournal.com 2009-04-16 04:18 pm (UTC)(link)
North Bay, which is about 4 hours, is indeed the cutoff.