Has anyone felt GOD?

Someone told me recently that irrespective of your religious beliefs or your belief in the entity called God, if you run a marathon, by mile 20-21 you realize who and what god is.

This has come across as very good news to me and I have continued with my training for the chicago marathon with renewed vigour. The feeling seems to have eluded me till now, but I’m sure I will find out what that person was talking about.

If anyone has a similar or different experience, please put it down for future reference.