95's ok. Lots of different topography. Took it south from Coeur d'Alene thru Moscow, Lewisville, Nez Pierce Rez, Riggins to McCall (was traveling back from Banff and Kelowna - CAN); HOWEVER, going North from Boise, Hwy 55 to McCall, to 95 to hwy 13 (Grangeville) then go EAST on hwy 12 (Kooskia) - it's along the Lewis and Clark trail up to LoLo. Exceptionally scenic, peaceful, filled w/ solace.
Hope this helps.