The average bus between Castlebar and Donegal takes 4h 5m and the fastest bus takes 3h 47m. The bus service runs several times per day from Castlebar to Donegal. 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 4 times a day between Castlebar and Donegal. The earliest departure is at 5:50 AM in the morning, and the last departure from Castlebar is at 5:50 PM which arrives into Donegal at 11:05 PM. All services require a transfer, and take on average 4h 5m. The schedules shown below are for the next available departures.

3h 52m • 1 change

4h 10m • 1 change

3h 47m • 1 change

3h 47m • 1 change

3h 52m • 1 change

4h 10m • 1 change

3h 47m • 1 change

4h 7m • 1 change
Want to know about travelling from Castlebar to Donegal? 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 Castlebar to Donegal. However, there are services departing from Castlebar station and arriving at Donegal station via Claremorris. The journey, including transfers, takes approximately 4h 5m.
Castlebar to Donegal bus services, operated by Citylink, depart from Castlebar station.
Castlebar to Donegal bus services, operated by Citylink, arrive at Donegal station.
The distance between Castlebar and Donegal is 117.5 km. The road distance is 170 km.
You can take a bus from Castlebar to Donegal via Claremorris in around 3h 51m.