My fondest fall biking was at peak leave color, riding over the Coralville Lake Dam. The view was spectacular overlooking the Iowa River valley. The air was crisp and clear.
Now, I am savoring every ride as if it is my last ride before spring. I hope to keep riding during the winter months, but lack of sunshine coupled with road salt/sand will limit my rides.
I also like this level of fitness that I have attained. My heart, lungs, and legs function at a level that I haven't seen for a long time.