The REK (Roche-Elliott-Kelly) 400 is one of the most demanding yet rewarding routes in the Audax Ireland calendar.

Starting from the Stephen Roche Monument in Dundrum, it ascends Glenmalure to the Shay Elliott Memorial before pushing south through the hills of Wexford and Kilkenny to Sean Kelly Square in Carrick-on-Suir. Looping back through the Kilkenny hills, and crossing the outbound route at Kiltealy, you head east through Enniscorthy to Blackwater, and then up the coast road to Arklow, Laragh and the finish.