I've ridden from Espanola east to Sudbury on Jacklin Rd, the TCH shoulder for 8 km (which was okay) Spanish River Rd, then onto old Hwy 17 (C.R. 55). That worked out well. But west from Espanola I haven't. Though I've read about Lee Valley Rd (from Espanola) out to the village of Massey (25 km) as being a good detour. There's another bit of road that might be nice, just east of the Soo: county road 638 at Bruce's Mines to Echo Bay. Looks like it's ~10 km longer though. Maybe a few paralleling gravel roads too? Other than that, it doesn't seem fun...