Once into Alberta, ride up through Kananaskis Country to Highway One and take it west through Banff and into BC. Alternately, just west of Banff, take Hwy 93 to Radium Hotsprings.
Coming into BC from Idaho, find your way to Creston and then north on Hwy 3a to the Balfour ferry. After crossing go north to Kaslo and then west to New Denver and into Nakusp. OR…from the ferry, ride into Nelson then west to Castlegar, Christina Lake, Osoyoos, Princeton.
Sorry for the brevity but I’m currently in Monterey California. Will post more detail when I get home.