The Highline Trail with The Grinnell Glacier Overlook. The pics do not do it anywhere near justice. It was beautiful and hard all at the same time. We started in frigid temps and big winds at the Logan Pass Visitors Center. We hiked a total of approximately 14 miles in total. That included a 1.6 mile round trip (20-25% grade up the side of a mountain) to the Grinnell Glacier Overlook in the middle of it all and a 4 mile 12-15% grade decent just past the Granite Park Chalet. The trail challenged you both physicality and emotionally most of the way. The views were stunning and on the OMG level. Enjoy!!