I wasted some time in a port-a-potty once. Just in case that discomfort was something serious. Stopping out of the wind did kind of even out my hot and cold spots, so it wasn't all bad. That stop does account for the 14+/mile section, though.
2:12:29 for the half isn't bad. I'll have to run a half to see how that would go when it's my goal.
I was reminded, today, why I don't wear boxer briefs for running. It was cold out - 29 degrees (F) at the start - so I thought, "Oh, these will be warm." They work like mechanical tweezers.
That is, however, my worst discomfort. I've got "water" on both knees, but not a major case. The duct tape and Body Glide worked like champs.