Hey, has anyone here ever entered, or rather completed a Tough Mudder or Spartan series race event barefoot. I am about to do this in Kentucky, June 27th and am curious how it went for you. I will be bringing Xero Z-Treks as backup on a paracord/carabiner necklace through the 20+ obstacles and 12 miles of trail. Just give me a yell with any advice out there! I'm really excited about this.