I had to stop a lot to check the GPS, which was pretty annoying when I had momentum. I'm now pretty sure I could get through the course without getting lost, which might be a slight advantage in the beginner race.
I did, however, not move on Sunday. At all.
On a tangential note, I assume since they weren't tinted, the glasses you ride with are prescription. Do you remember what make and model they are? I'd like to get something similar so that if I wipe out bad enough it doesn't keep me from earning a living.