I used Milepost. Crossed the border at Sweetgrass, MT. Stayed on the main highways thru Alberta, British Columbia and Yukon Territory, to Cooper Landing south of Anchorage to visit a friend, then north to Fairbanks, AK. Home pretty much the same route.
In Canada, I stayed in CGs with hookups and found some that had 20A and 50A but no 30A, so take dog bones for everything. Take your time. Mostly two lane roads with lots of potholes. Not a very long road repair season up there.
And take some Canadian cash. Don't expect people 30 or 40 Kilometers north into Canada to know the exchange rate. Make up a cheat sheet for converting to Metric weights and measures. And take a camera. Its beautiful country.