You are planning a great trip. Don't forget to spend some time in Alberta and British Columbia as there is lots to see (particularly the Calgary Stampede the second week in July). I drive up through Calgary, Banff, Lake Louise, Jasper,
One US gallon is 3.78 litres. Gas prices in Alberta right now ar $1.15 per litre. We are suffering as much as you are with Wall Street's speculative trading with oil prices. Generally its pretty easy to find fuel without ethanol.