From Toronto, take Hwy 400 N to Barrie. Just N of Barrie, you have 2 options. Option 1: travel N on Hwy 400/69 to Parry Sound, then continue N on 69 to Hwy 64 at Alban. Go R on 64 (63 km to go). Follow 64 (64 goes R at Noelville) about 1 km past Lavigne and turn R on Poirier Rd. Option 2: Take Hwy 11 N to North Bay, then Hwy 17 W to Verner and Hwy 64 S to Poirier Rd, just before Lavigne.
From Sudbury, take 17 E to Verner and 64 S to Poirier Rd.