I was just thinking about the next few weeks and that I wanted to explore a mix of paved/gravel roads north of Caledon East...I'm not very familiar with these so I cannot tell you a route, but if you look at a map of the area in between the following four roads I think you'll be able to piece something together (I'm going to try this myself in the next few weeks):
- McLaughlin Rd (west). I'm planning to start here, in Inglewood (good roads, not all gravel: Grange, Escarpment, McLaughlin north to Forks of the Credit rd)
- Boston Mills / Castlederg (south). Stay above here otherwise you're on King, Mayfield...and they're busy. You can use the rail trail when it's dry...or move the boundary up (Grange)
- Duffys Ln (east). Any further east and your by Highway 50. Probably good riding on the other side of 50 though.
- Adjala 30 Sideroad (north). Depending on how much riding you want to do, you can ride north to the other side of 9 as far as you like (Adjala 30 is pretty far, almost at 89). I guess you could go as far as Adjala 5 or 10 and still get in a good ride, and while I haven't explored much up here, I'm betting there are gravel roads).
My plan: ride east from Inglewood along the rail trail or Grange. Up Duffys. Then hit Coolihans, Finnerty, Centerville, Escarpment, Grange (whatever zig zag route works), heading north to north of highway 9. Ride those roads and then head south hitting the east/west roads you didn't already use. I think there is a good 60-100k ride possible, maybe with 50% gravel???
Good luck and let us know what you discover!