Irish Rail operates a train from Dublin to Roscommon 3 times a day. Tickets cost $30 - $50 and the journey takes 1 h 42 min. Alternatively, Bus Eireann operates a bus from Dublin to Roscommon every 2 hours. Tickets cost $14 - $20 and the journey takes 1 h 30 min. 2 other operators also service this route.
From Heuston Train Station train to Roscommon Train Station. 1 h 42 min 34€. From Busáras bus to Edgeworthstown, Edgeworthstown then bus to Church Car Park. 2 h 34 min. From Dublin drive to Roscommon. 1 h 41 min 21€.