1. The Turkey Costume Guy/Girl
You're gonna meet hundreds of these festively dressed folks at any given trot. Similar to your standard Santa around Christmas time, the turkey/human hybrid is willing to sacrifice his/her pride for the greater cause of showing everyone just how easy-going they really are. These people aren't doing it right if a smile isn't plastered across their face during the entirety of the race, because what's more fun than costumes, and better yet, running while wearing a costume?
Also, expect to see a few of these birds sprint to the lead in the first 100m, which is all but guaranteed to be the photo that the local newspaper uses the next day.