Irish Olympian and track athlete Ciarán Ó Lionáird has died at the age of 38, according to multiple Irish outlets. RTE News reports that he dies in Montreal, where he was at the time of his death. BreakingNews.ie also describes his death as sudden and notes that the news is met with shock across the wider athletics community. The Belfast Telegraph similarly reports his death aged 38. Sources identify Ó Lionáird as an Irish runner from Cork and a member of the Leevale athletics club. He is described as a former Irish track athlete and a 2012 Olympian, indicating his participation in the Olympic Games. Across the reports, his international career is characterised as relatively short, and his popularity within athletics is highlighted despite his later passing. While details beyond his age, nationality, club connection, and location of death are limited in the provided summaries, all accounts agree on the core facts of his identity, former Olympic status, and the fact that he dies at 38.