Thanks for all the great input.

I'm convinced!

I've been to Jackson, driven through the Tetons and Yellowstone. Instead of starting/ending at Jackson, I'd rather go to Missoula as there are easy air connections from there to SFO, where I live. Also, I've never spent any time in Montana and, as a life member, wouldn't mind visiting the ACA headquarters.

What is the best direction to ride this route? Should I start in Jasper (Edmunton and VIA) and ride south or start in Missoula and ride north?