I think in my case it's to do with a certain kind of enlightenment! Despite appearances to the contrary I can assure the reader that in the photo below I am totally at one with myself and the universe. What is zen running? Can it be defined? Perhaps appearances can be deceptive. One speaks of a "runner's high" as if some kind of Nirvana has been reached or attained. But I don't think it's like that, at least not in my case. To me it's the feeling that the ghost and the machine are somehow in harmony. It is a resulting feeling that is more than the sum of its parts. It's how I imagine a wild animal such as a hare scampering over a field of stubble on a winter's day must feel.
I have just returned from a training run through the forest at sunset in the snow and I'm sorry I didn't have my camera with me. It seemed to me that I was an important observer in and also a participant in the natural universe and that I was for some moments in exactly the right place at exactly the right time and engaged in exactly the right activity. I'm sure I was smiling. Zen running you might say.