We are so excited to be arriving at Glacier in two weeks. We are staying 4 nights at Swiftcurrent, one night Waterton, one night Rising Sun and one night Apgar Village Inn then down to Yellowstone and GTNP. My husband and I love to hike and can easily do 3-5 miles. Not sure how my slightly arthritic knees will handle 5-10 mile hikes but I plan to try at least one. Looking for suggestions for a "must do" hike. I did buy new trekking poles--I used to use just one and thought I should graduate to two:) Thanks for any suggestions!