The long distance run is a state of being, a picture of eternity and endless life. So is sitting on a cushion. These are extremes which meet in the unseen intersection away from the peak of the activity bell curve.
Being is without distinction; a state of mind close to the Universal Oneness.
Any thought makes distinctions, divisions and separations. I get to choose my thoughts. When I choose the silence of being, my reality is God. When I choose distnctions, my reality is ego.
Run quietly through the night, or through the forest, or along the side of the road. Be without distinctions in order to be infinite.
Just be a runner.