Dublin Half Marathon 2025 Route. The dublin half marathon at phoenix park on 21 september 2025 is the fourth event in the irish life dublin race series 2025. Dublin marathon and dublin city council have announced the addition of a new dublin city half marathon, which will wind its way across the city’s northside on march 30.
A new event on the running calendar, the dublin city half marathon, will take place next year on sunday, 30 march. The start is in o’connell street, and from there the route takes you through ballybough, whitehall, killester, howth road, raheny, st anne’s park, clontarf, fairview park.