Duathlon.com
   Online portal that provides duathletes a forum for expression through email, listservs, classifieds, events, upcoming news and events, results, training tips and support, FAQs.
   http://www.duathlon.com/

Team Magic
   A source for duathlon and triathlon races. Race information and schedule, calendar, entry form, results, and links.
   http://www.team-magic.com/