The average bus between Cardiff and Mountain Ash takes 1h 35m and the fastest bus takes 1h 7m. There is an hourly bus service from Cardiff to Mountain Ash. 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 Cardiff and Mountain Ash. The earliest departure is at 6:11 AM in the morning, and the last departure from Cardiff is at 10:42 PM which arrives into Mountain Ash at 12:09 AM. All services require a transfer, and take on average 1h 35m. The schedules shown below are for the next available departures.

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2h 7m • 1 change
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2h 7m • 1 changeWant to know about travelling from Cardiff to Mountain Ash? 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 Mountain Ash. However, there are services departing from Greyfriars Road GF station and arriving at Oxford Street station via Pontypridd Bus Station Stand 10. The journey, including transfers, takes approximately 1h 35m.
Cardiff to Mountain Ash bus services, operated by Stagecoach South Wales, depart from Greyfriars Road GF station.
Cardiff to Mountain Ash bus services, operated by Stagecoach South Wales, arrive at Oxford Street station.
The distance between Cardiff and Mountain Ash is 26.3 km. The road distance is 31 km.
You can take a bus from Greyfriars Road GF to Oxford Street via Pontypridd Bus Station Stand 2 in around 1h 39m.