I have discovered that walking country roads and riding a stationary bike during winter months does not keep me in shape for hikes across mountain trails. Especially when carrying 20+ pounds in a day pack.
We started at Hairy John State Park picnic area and took the (Pennsylvania) Mid-State Trail over the mountain toward an old railroad bed along Penns Creek.
In one open area of forest, the trail was impossible to see. We literally had to stop at each trail marker and look for the next one before walking on.
In two places, foot bridges traverse mountain streams.
Although foot-weary by trail’s end, the beauty of the hike made every ache worthwhile.