It was a local one - not done by Clif. The guy who was leading our group was running his fifth half and it was his first as a pacer. He had a "veteran" running with him to keep on pace. We talked a lot about the race, but honestly - I never thought to ask about hydration stops.
I ended off falling of the pace group, but kept with a bunch of runners going for the same time and we kind of paced ourselves. We didn't hit the mark, but we weren't SUPER far behind it. Maybe four minutes? I looked up the bib of the pacer and he finished nearly 8 minutes ahead of the time they were pacing at.
I would definitely go with a pace group again. But I definitely know what questions to ask now, and to see how they are following pace and how they pace out.
Thanks for the information! I will certainly ask those questions, as well. I was hoping to attach myself to a pace group. I tend to suck it up better when I run with a group.