OOHHHhhh! Glacier is one of my favorite places on the planet. Can't wait to see if anyone chimes in. We didn't bike then--we hiked. You can do a bike tour up Rising to the Sun(?) road--which we can't picture because it's so narrow and busy. The drive was stressful enough! We want to go back and stay at the northern lodge, hike to a glacier, cross over to the Canadian side and stay at the Castle!