Vancouver to Banff back to San Diego

Hi all, we're planning a trip to Canada from San Diego. We're planning on visiting Vancouver, BC and head east to Banff NP. We have already planned out from San Diego to Seattle, but need help the rest of the way. Especially between Vancouver and Banff. We plan on staying in Vancouver for a few days and then heading out to Banff. What is the best route to take, best sites to see and a good halfway point between Vancouver and Banff to stay (we know we can't make it in one day)? After a few days in Banff, we plan on spending some time in Glacier NP. We have the same questions for the route between Glacier and San Diego, what is the best route, any must see sites and good places to stop? FWIW, we'll be traveling during July in our TC. Thanks!!!