Lillooet River - Starting from Silt Lake, below the Lillooet Icefield, this section of the Lillooet is a stunning wilderness trip, either accessed by float plane (hard shell boats or a raft) or a long, difficult off trail hike (packraft).
This is an amazing packrafting trip, provided you have solid bushwhacking and navigation skills as the 14km hike in is choken in alder and can be difficult to find your way through.