50% of participants had to do an extra lap. Based on post event strategy discussion, that % may actually go up next time.
https://picasaweb.google.com/111655496040546546858/BeerMile2013?authuser=0&authkey=Gv1sRgCNL24KCaqefo4wE&feat=directlink
https://picasaweb.google.com/111655496040546546858/BeerMile2013?authuser=0&authkey=Gv1sRgCNL24KCaqefo4wE&feat=directlink