Was hoping to get some input from locals in the area. My wife and I have been trying to decide if we should drive out (from Michigan area) and see the state parks in your area. Start at Rocky mountain National Park, through Yellowstone up to Glacier national park. We would be in Rocky Mountain late next week, Yellowstone a couple days after that and glacier a couple after that (Oct 1st). The reason for this direction of loop is the up to the sun road in glacier is closed until the 29th for maintenance. We would only be driving in the daylight at all times. I would still have summer tires on. My worry is weather (snow) at any point during our trip because of the summer tires and animals (hitting them because of increased activity). Is this trip to risky to do? Thoughts?