The average train between Dublin and Castlerock takes 4h 42m and the fastest train takes 4h. The train service runs several times per day from Dublin to Castlerock. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 3 hours between Dublin and Castlerock. The earliest departure is at 5:50 AM in the morning, and the last departure from Dublin is at 8:50 PM which arrives into Castlerock at 8:50 AM. All services require a transfer, and take on average 4h 42m. The schedules shown below are for the next available departures.

4h • 1 change

4h • 1 change

4h 10m • 1 change

4h • 1 change

4h • 1 change

4h • 1 change

4h 10m • 1 change

4h • 1 change

4h • 1 change

4h • 1 change

4h 10m • 1 change

4h • 1 change
Want to know about travelling from Dublin to Castlerock? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct train from Dublin to Castlerock. However, there are services departing from Dublin station and arriving at Castlerock station via Belfast Great Central. The journey, including transfers, takes approximately 4h 42m.
Dublin to Castlerock train services, operated by Iarnród Éireann (Irish Rail), depart from Dublin Connolly station.
Dublin to Castlerock train services, operated by Iarnród Éireann (Irish Rail), arrive at Castlerock station.
The distance between Dublin and Castlerock is 206.7 km. The road distance is 287 km.
You can take a train from Dublin Connolly to Castlerock via Belfast Great Central in around 4h 37m.