Hiawatha Trail. Rode it up hill during a two-week, unsupported tour in MT and ID in 2019. I started the day outside of Avery, ID and rode the former right-of-way to the Pearson Trailhead (western end of the Hiawatha) and continued on to East Portal. Then hooked up with the NorPac Trail up to Lookout Pass then continued on the Wallace, ID. Went from ID into MT and back into ID that day.