From my experience of 24 hour racing; you will feel terrible before the daylight; right before dawn; I remember feeling like giving it up about that time.

There is something about the sun coming up and rejuvenates you and makes you feel like you can keep going.

I remember starting to see the sky lightening and the stars slowly disappating and then the sun peaking over the horizon - I gave out a sigh of relief and then really enjoyed the sunrise.

spoke