Chicago Marathon tomorrow

The Chicago Marathon is on again tomorrow. I am hoping that I can train and perhaps run a half marathon next year, and then consider running a marathon again.
After running a marathon, the whole body could be in pain, but the mind and soul are ecstatic. One feels a great sense of spanning a vast distance. Quite different from the sensation one gets when a romance goes awry- a sensation of a gulf that spans a vast distance, a mind and soul in pain. Perhaps it is just two sides of the same coin....