29 October 2017; Sean Percy of Templemore A.C, from Killea, Co. Tipperary, competing during the SSE Airtricity Dublin Marathon, where 20,000 runners who took to the Fitzwilliam Square start line to participate in the 38th running of the SSE Airtricity Dublin Marathon, making it the fifth largest marathon in Europe. Photo by Ramsey Cardy/Sportsfile