Race details
The Castle to Castle Run on 13 March 2027 includes an Ultra Marathon and Marathon in County Antrim, Northern Ireland. The details on this page are based on the previous event and subject to change; we will update this listing as more information comes to hand. The Ultra starts at Carrickfergus Castle and runs to Belfast Castle then back on the same route to finish at Carrickfergus Castle, one of the oldest Castles in Ireland. The Marathon is a point-to-point route starting at Belfast Castle and