The average bus between Letterkenny and Castlerock takes 4h 18m and the fastest bus takes 2h 20m. The bus service runs several times per day from Letterkenny 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.
Buses run 5 times a day between Letterkenny and Castlerock. The earliest departure is at 6:35 AM in the morning, and the last departure from Letterkenny is at 9:00 PM which arrives into Castlerock at 8:15 AM. All services require a transfer at Foyle Street Bus Station and take an average of 4h 18m. The schedules shown below are for the next available departures.


3h 38m • 2 changes


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2h 20m • 2 changes
Arrives next day


11h 15m • 2 changes


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2h 42m • 2 changes


4h 15m • 2 changes


3h 20m • 2 changes


3h 42m • 2 changes


4h 10m • 2 changes


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3h 38m • 2 changes


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2h 42m • 2 changes
Want to know about travelling from Letterkenny 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 bus from Letterkenny to Castlerock. However, there are services departing from Letterkenny station and arriving at Castlerock station via Ulsterbus Depot. The journey, including transfers, takes approximately 4h 18m.
Letterkenny to Castlerock bus services, operated by Bus Éireann, depart from Letterkenny Bus station.
Letterkenny to Castlerock bus services, operated by Bus Éireann, arrive at Castlerock Orange Hall station.
The distance between Letterkenny and Castlerock is 64.7 km. The road distance is 90 km.
You can take a bus from Letterkenny Bus to Castlerock Orange Hall via Foyle Street Bus Station and Limavady Bus Station in around 3h 46m.