Multiple ways to get to Granite Park Chalet. From Logan Pass visitor center, from the Loop Going to the sun highway or from the Many Glacier side (the is the longest and hardest way). Amazing piece of history here. There are camp sites available or stay in the chalet. You will need reservations and you will need to apply for back packing and camping in the winter before you go to Glacier. Not sure how the you reserve the chalets but it would be safe to say you need to be planning a year in advance.