Marilyn, welcome to TA!
We need more information in order to help you. Even knowing where you are from will be an advantage in helping you. You can add that information and it will be displayed under your name. You may need a VISA to enter the U. S. in order to visit Seattle, but if you from Toronto, it is not necessary.
Also, will you have a rental car? Some agencies don't let their vehicles south of the border. Lots of others do though. Are you going to be camping? B and B? Hotels?
August will be a busy time here, and I think you would be wise to book something soon. You are missing all the weekends with those dates, so that is good.
Let us know how you're traveling, and how many.... any kids involved?
With those 3 there is probably no best way. Google Maps will help you.
Tofino to Victoria, about 5 hours driving.
Victoria to Seattle, via Coho Ferry, WA State ferry, or BC Ferries, about 5 hours.
Seattle to Vancouver, anywhere from 3-5 hours depening on wait time at the border.
Adding a location to your profile would help destination folks a lot. Advice will be tailored differently for overseas travellers, Americans and Canadians
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