Snowshoing!
Scott and I snowshoed part of the Pacific Crest Trail near Donner Pass. It was something like 6.25 miles, starting at 7200 feet and going up to 9100 - no wonder I was out of breath! Crowded at first, but by the time we got to Castle Peak, there was no one else around, and we had a lovely solitary lunch up there, sitting in a snowbank.