I almost DNFed the MoCo loop on Sunday. Actually technically I did because I had to skip the Clopper Lake and headed straight back to Schaeffer with my last bit of will power.
Now think of it most likely it was the electrolytes. I drank and sweated at least twice as much as I did before. All fluid I took in was water.
Denis was strong all the way.
GPS track: http://connect.garmin.com/activity/10841571