The average bus between Belfast and Trim Castle takes 4h 17m and the fastest bus takes 3h 51m. There is a bus service every few hours from Belfast to Trim Castle. 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 hourly between Belfast and Trim Castle. The earliest departure is at 3:10 AM at night, and the last departure from Belfast is at 7:10 PM which arrives into Trim Castle at 11:15 PM. All services require a transfer at Dublin, O'Connell Street Upper (The Gresham Hotel) and take an average of 4h 17m. The schedules shown below are for the next available departures.

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4h 20m • 1 changeWant to know about travelling from Belfast to Trim Castle? 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 Belfast to Trim Castle. However, there are services departing from Belfast Glengall station and arriving at Trim station via Dublin, O'Connell Street Upper (The Gresham Hotel) station. The journey, including transfers, takes approximately 4h 17m.
Belfast to Trim Castle bus services, operated by Aircoach, depart from Belfast Glengall station.
Belfast to Trim Castle bus services, operated by Bus Éireann, arrive at Trim station.
The distance between Belfast and Trim Castle is 128.8 km. The road distance is 150 km.
You can take a bus from Belfast Glengall to Trim Castle via Dublin, O'Connell Street Upper (The Gresham Hotel), Dublin Busáras, and Trim in around 4h 23m.