Antoine Jolicoeur Desroches is a pro triathlete in Quebec, but I spent a good deal of the time talking to him about Barkley as well. I might do a race up his way next year, and if so hope we cross paths.
John Kelly is an ultra runner and triathlete. He won the prestigious and legendary Barkley Marathon and had the second fastest Age Group run split at the Ironman World Championship. http://www.randomforestrunner.com