2011 ITU Duathlon World Championships
itu duathlon world championship duathlon competition held gijón spain september organized international triathlon union itu championship course included k run k bike k run title amateur duathletes elite paraduathletes elite duathletes awarded two day competition september junior woman junior men elite u woman elite u men paraduathlon september age group sprint distance age group olympic distance paraduathlon medal ceremony elite mixed team relay junior mixed team relay closing ceremony katie hewison great britain first world championship winning womens elite division sergio silva men title despite falling behind leader bike leg however silva charged field last run segment claim win sergio silva elite men race stripped title testing positive methylhexaneamine positive test resulted sixmonth ban silva instead standard twoyear suspension silva able convince itu took substance inadvertently official event website complete result itu duathlon world championship