From Toronto

401 East to County Rd 45 @ Cobourg (474)
North on 45 through Roseneath
At North edge of Village .....
Turn Left on Halstead Rd
Follow to stop sign.
Turn Left on 4th Line Rd.
Then immediately Right on Campbell Rd

From Ottawa

Highway 7 to Norwood
South on County Rd 45 through Hastings
Turn Right on 4th Line Road
Follow To Campbell Road on your Left

If you miss 4th Line Rd, you'll come to Roseneath, simply turn Right on Halstead Rd and follow the directions from Toronto