Take 395 all the way to Pendleton, Oregon. Northern 395 in Oregon is hilly, but beautiful, except where the old forest fires toasted everything. From Pendleton, go east to Missolla, MT on 12. 12 is beautiful.
Orofino, ID has a nice RV park.
HERE Clearwater Crossing RV Park
John Day, Oregon is an interesting town too. Gold was the reason the area boomed back in the day. The fair grounds has an RV Park. Prairie City, Oregon also has a nice city RV Park.
Backpacker and tent camper all my life. Motorcycle trips with a tent too 1978 to Present. 2016 Grand Design 380TH as of 10-29-2015. Now a New 2018 374TH-R Solitude as of 3-16-19. 10-19-18-traded truck for a 2016 Ram 3500 DRW Laramie Crew Cab 4x4 Long Box.