Has anyone here ever been on an off-pavement bikepacking trip to western Ontario?

I live in Minnesota and I'm daydreaming at work, wondering about the viability of a route in the vast wilderness to the north. I don't want to be sharing narrow highways with semis, but there doesn't seem to be a whole lot else for roads.

If it's possible to do a trip up there I probably would as a preparation for doing the Tour Divide. I haven't been able to find anything about bikepacking the region.

Any suggestions?