The average bus between Cardiff and Trefil takes 4h 21m and the fastest bus takes 2h 28m. The bus service runs several times per day from Cardiff to Trefil. 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 every 4 hours between Cardiff and Trefil. The earliest departure is at 7:37 AM in the morning, and the last departure from Cardiff is at 6:25 PM which arrives into Trefil at 7:20 AM. All services require a transfer at Merthyr Bus Station Stand 8 and take an average of 4h 21m. The schedules shown below are for the next available departures.


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Want to know about travelling from Cardiff to Trefil? 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 Cardiff to Trefil. However, there are services departing from Cardiff station and arriving at Trefil station via Merthyr Bus Station Stand 1 station. The journey, including transfers, takes approximately 4h 21m.
Cardiff to Trefil bus services, operated by Stagecoach South Wales, depart from Greyfriars Road Stop GJ station.
Cardiff to Trefil bus services, operated by Stagecoach South Wales, arrive at Llwyn Helyg station.
The distance between Cardiff and Trefil is 36.9 km. The road distance is 72 km.
You can take a bus from Greyfriars Road Stop GJ to Llwyn Helyg via Merthyr Bus Station Stand 8, Tredegar Lidl Stand 1, and Tredegar Bus Station Stand 2 in around 3h 15m.