Irish Triathlon Association (ITA): Supports Ireland and Northern Ireland triathlon, duathlon and multisport events and athletes though race calendar, events and results, photos, news, photo gallery.
Irish Triathlon.com: SEB fitness provide triathlon coaching and sport specific training from beginner to Elite Athletes.
Limerick Triathlon Club: The official site with races, events, profiles, and results. Also swim tips, and announcements about triathlons in Limerick.
Triathlon Ireland: Includes a club directory, membership information, calendar and results.
Tsunami Triathlon Club: Dublin-based club featuring training schedule, news, race results, and photo gallery.