Hi Judy,
Although it’s not a TI event, Setanta Tri, run this Olympic in Carlingford, this year Sunday the 12th of July. http://www.active.com/carlingford-colouth/triathlon/races/carlingford-olympic-distance-triathlon-2015
Great course, swim in Carlingford Lough (with an aussie exit), great bike route up and over Carlingford (think of the views) and a flat out and back run. If you haven’t already signed up for Letterkenny, this may be a bit more practical in logistics/cost as only just over the hour from Dublin! If I wasn’t doing the Escape from Ireland swim and timings were better I’d defo be doing it…. Food for thought anyhow!!