Abs cramping!

Both those item are possible contributors to the cramps.  Fitness is also typically a contributor and would be my primary guess.

Thanks for all the input. 

While my fitness could always be improved, none of the distances were long for me.  It was a VERY HOT which makes me think dehydration especially given I lost 2-3% bodyweight after having re-hydrated a good bit.  The interesting part (for me anyhow) is my cramps were bad on the first loop but after re-addressing things and guzzling a bunch of fluids (mostly gatorade endurace) through that first lap I was able to run cramp free for the second loop of the race although slowly.  I will definitely have to force more liquid down on the bike.  Even though I took more than I usually do in training, it was still not quite enough apparently.

Looking through my logs, I did have a touch of this on a ~4H-bike ~1H-run brick.  I should have learned! 

Thanks again,

-Mark

It's not necessarily that you're not fit enough for the distance, it's that your going harder over that distance than your body is ready for.  The fact that they went away as you slowed down confirms that.  I've experienced the same thing and while dehydration may have played a role for me as well, I do think fitness is the main culprit.