Seattle to Banff Campsites, advice?

garyhaupt wrote:
Now then...look up Molson, Wa. You get there from Oroville...

I would go even farther north than Gary suggests. North of Oroville, the Okanagan Valley is one of our favorite places in western Canada. Orchards and vineyards covering the rocky hillsides above big, beautiful glacial lakes, lots of wineries, great fruit (depending on the season), swim beaches in public parks, all kinds of boating. If you like any of those sights or activities, I would highly recommend it either coming or going on your trip.

However, it's tough to go wrong in traveling in southern BC--it's all gorgeous! (With the possible exception of Trail.)