On Saturday, I rode about 50 miles, around the southern half of Lake Washington, through a few neighboring towns, over a long floating bridge, and had a great time. LBS lent me their Madfibers again, so I took them out on some rolling hills, through some wind, and so on. Plus it was warm and sunny, so I wanted to spend most of the day outdoors. I had a great time, and could have done another 50 miles, but I had a date that evening.
Yesterday, instead of riding, I hiked up to Annette Lake. There are more avalanches in the Cascades than anywhere else in the lower 48, so, I wanted to get my mountain time in while I still could. I was pretty tired by the end of this hike! ( But, if you're local or planning to visit, this is a wonderful trail through the old growth rain forest, ending at a magical lake surrounded by mountain peaks and fed by two waterfalls. )
Why does hiking take more out of me than cycling? I would expect it to be easier, and to use mostly the same muscles I've been strengthening on the bike.