The average train between Maynooth and Portmarnock takes 1h 27m and the fastest train takes 52 min. There is an hourly train service from Maynooth to Portmarnock. 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 hourly between Maynooth and Portmarnock. The earliest departure is at 5:57 AM in the morning, and the last departure from Maynooth is at 11:13 PM which arrives into Portmarnock at 6:45 AM. All services require a transfer, and take on average 1h 27m. The schedules shown below are for the next available departures.

1h 15m • 1 change

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1h 22m • 1 change

1h 11m • 1 change

1h 13m • 1 change

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1h 20m • 1 change

1h 14m • 1 change

1h 13m • 1 change

1h 21m • 1 change

1h 20m • 1 change

1h 14m • 1 change
Want to know about travelling from Maynooth to Portmarnock? 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 Maynooth to Portmarnock. However, there are services departing from Maynooth station and arriving at Portmarnock station via Dublin Connolly. The journey, including transfers, takes approximately 1h 27m.
Maynooth to Portmarnock train services, operated by Iarnród Éireann (Irish Rail), depart from Maynooth station.
Maynooth to Portmarnock train services, operated by Iarnród Éireann (Irish Rail), arrive at Portmarnock station.
The distance between Maynooth and Portmarnock is 30.6 km. The road distance is 36 km.
You can take a train from Maynooth to Portmarnock via Dublin Connolly in around 1h 24m.