Good call. I lived through my first ever DNF this season as well - went so hard on the first lap that I literally had to pull over to chuck my breakfast. NOT a good way to race. Like you, my lap time for the second lap was so much slower than the first, and I still had one more to go.

Dehydration is not trivial. You DID THE RIGHT THING! I know your disappointment, but imagine how disappointed you would be if you were currently in the hospital ...

Keep your good attitude and the perspective. Next year, pre-hydrate and get plenty of rest. Did you taper for the event? That could help also.

Let me repeat, YOU DID THE RIGHT THING!

SheFly