Hi RV'RS:
We have driven 28, 30, 31 & 32 footers and have averaged about 8 1/2 miles per gallon and the length has not made a difference! Hope this helps!
We have also done the route you have described twice and it it doable! The first few days we hit it hard since it's mostly interstate. Some years the wind has been the hardest thing we have faced other than snow and blizzards in northern BC. Once we make it to Alaska we are able to spend a couple days in one spot but usually only stay one night at each location. We usually only spend 16 or 17 days on the trip before we head home! A cruise back south sounds awesome! We would consider it, but since we both still work, three weeks is about all we can take at one time.
