Dublin Heuston-Limerick Junction (reverse)-Limerick Check (reverse)-Killarney(reverse & break)-Dublin Heuston.
Booked stock is a 201 class loco and a mkIV carriage set, this will be the first ever passenger working of a mkIV set over the Limerick line, having previously only worked there on acceptance trials/works visits.
201s are also now comparitively rare visitors to the Limerick and Tralee lines, with 071s traditionally more common on PW and railtour workings.
https://www.tailtetours.com/event-details/the-great-southern-railway-centennial-railtour