When you go for a run it is perfect weather. It is sunny and Comfortably cool. You are just coasting along with absolutely no effort. When you finally quit and go home for a glass of ice tea, you get that incredibly good feeling that you get after a good run.
Add a picture of your race. Pictures attract the attention of the viewer. When adding a picture be sure and add a relevant title that describes your race.
Runners high is caused by the release of a naturally occurring painkillers called endorphins during exercise. These are released at different levels in different people. They probably date back to the early development of human beings and the fight or flight response to danger. They are responsible for a feeling of euphoria and well being after intense exercise.