Yours is a unique quest.
Just a quick look on the web and I see wolves can trot at 5 mph up to 30 miles in one day on a hunt.
They are not pulling weight of course.
The bike touring videos I have watched were of much smaller dogs weighing about 40 lbs and they needed frequent rests and water breaks without pulling.
You would have to account for carrying large amounts of water or know with certainty how to obtain water for two dogs working hard.
Raw meat at the end of a day might not be enough to sustain your pups on a long day and you would need to supplement their diet.
https://iditarod.com/edu/food/
I would investigate the needs of dogs pulling sleds as a close match for what you are planning.