United States Modern Pentathlon Association - Includes results, rules, FAQ, calendar, history and related links. Also provides US team profiles and champions from 1991. - http://www.usolympicteam.com/152.htm
TracyMattes.com - Official site, features athletic and journalism biography, gallery and general information on the sport. - http://www.tracymattes.com
Hellenic Modern Pentathlon Federation - Official site featuring organization information, national and international events, photos, and links. - http://www.pentathlonhellas.gr
Modern Pentathlon - Guide featuring the sport's history, disciplines, competitions, and scoring system. - http://www.modern-pentathlon.com/
Modern Pentathlon Sweden - The official site with information, results, photographs, and links. - http://home.swipnet.se/modernfemkamp/eng
Cambridge University Modern Pentathlon Club - Offers details on training, social and competitive events calendar, news, photo gallery and links. - http://www.srcf.ucam.org/cumpc/
Modern Pentathlon Victoria - History, organization, athletes, calendar, news. - http://www.pentathlon.org.au/
Oxford University Modern Pentathlon Association - Offers information on the sport, and the organization's training and competition schedule, along with a mailing list and code of conduct for membership. - http://users.ox.ac.uk/~oumpa/
British Columbia Modern Pentathlon Association - Provides news, competitions calendar, spectator guide, along with athlete development, assistance and profiles. Scoring, rules and links are also featured. - http://www.bcmpa.bc.ca/
Union International de Pentathlon Moderne - Recognized by the International Olympic Committee as the world governing body for the sport. Includes news, rules, competitions, results, links, and a forum. - http://www.pentathlon.org/