Not enough porta potties (line was 100 ppl deep easy 30 mins prior to race - people had to leave to go start). All the non-runners hanging out at the front of the race (race director could have said "Hey, if you are planning to walk, step back!" but no, nothing... lots of selfies, etc.) You burn a TON of energy running around all of the non-runners that positioned themselves at the front. They don't do any awards other than a finisher medal, which is probably why there are so many walkers. I ran the half a number of years ago, and it was a similarly poor experience. It is unfortunate, because the scenery is second to none.