We left Alaska 1-2-2018. Reached Arizona about 1-9. Slow going until Edmonton. We avoided most snow events but ice and snow on road, so 35 mph average for many 100's of miles. Clear sailing after Edmonton, but anything is possible in the Winter. This was our third winter trip. No real problems, but not the best time of year to travel. Return trip was early April. Snow covered roads in patches from South Dakota on North. It's easier to drive on dry snow at minus 30 than slushy mess at plus 30 (Fahrenheit).