Hi! I too have been on the hunt for some routes around Ontario.

Where abouts are you? I live in mid town Toronto and my parents are in Vaughan.

I've been looking for routes around Ontario as well for 2015.
Lot's of trails around, just not many that are:
1. well mapped
2. allow for cycling
3. long
4. form a loop (not necessary, but would be nice)

There's the COLT loop, that covers 450km from Kawartha Lakes, to Stirling, up to Bancroft, across to Haliburton, and back down to Kawartha Lakes, it's not very technical or rugged by the looks of it, but it is mostly off road on rail trail and could be an easy way to get acquainted to bikepacking.

New to this forum and just starting to get interested in this bikepacking thing.
Currently collecting extended hike/biking gear and want to try some sort of ride
this coming summer. Would rather do mtb. I live in currently live in Toronto but have
connections to Guelph, Milton etc.
 I have been looking into the Ganaraska forest as it's extensiveand somewhat
close. Any bike specific info would be great.

Werkinit, you used to ride trials didn't you? Is your name Darren? I used to ride with you guys and Yuri. shoot me an email at iohan.gue@gmail.com ! (starts with an i, not an L - when its bolded its hard to see )

Toronto region here too! Looking for folks to plan and ride with.
Shoot me a message if anyone's interested!