Let me preface this review by saying I am a walker and just dipped my toe into running. I hope to complete some form of training as I have been bit by the marathon bug. I love the experience, the adrenaline and of course the bling. Ok, back to the Shamrock Shuffle. Again, I have nothing to compare this marathon experience to, but I can say that this was the most organized. It didn't feel like 20,000+ people were in attendance. My nerves almost gat the best of me and thought about not doing it. Looking forward to shuffling next year.