The average bus between Mountain Ash and Treharris takes 1h 35m and the fastest bus takes 53 min. There is a bus service every few hours from Mountain Ash to Treharris. 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 Mountain Ash and Treharris. The earliest departure is at 6:05 AM in the morning, and the last departure from Mountain Ash is at 10:55 PM which arrives into Treharris at 7:01 AM. All services require a transfer, and take on average 1h 35m. The schedules shown below are for the next available departures.

1h 56m • 1 change

53 min • 1 change

1h 19m • 1 change

59 min • 1 change

1h 56m • 1 change

53 min • 1 change

1h 19m • 1 change

59 min • 1 change

1h 56m • 1 change

53 min • 1 change

1h 19m • 1 change

59 min • 1 change
Want to know about travelling from Mountain Ash to Treharris? 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 Mountain Ash to Treharris. However, there are services departing from Mountain Ash station and arriving at Treharris station via Pontypridd Bus Station Stand 2 station. The journey, including transfers, takes approximately 1h 35m.
Mountain Ash to Treharris bus services, operated by Stagecoach South Wales, depart from Mountain Ash station.
Mountain Ash to Treharris bus services, operated by Stagecoach South Wales, arrive at Treharris Bus Station Stand 2.
The distance between Mountain Ash and Treharris is 5.2 km. The road distance is 22 km.
You can take a bus from Mountain Ash station to Treharris Bus Station Stand 2 via Pontypridd Bus Station Stand 6 in around 1h 1m.