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Cardiff Bay to Merthyr Tydfil trains

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Trip Overview

The average train between Cardiff Bay and Merthyr Tydfil takes 1h 19m and the fastest train takes 1h 3m. There is an hourly train service from Cardiff Bay to Merthyr Tydfil. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

1h 19m
Duration
24 mi
Distance
£9
Average price
Hourly
Frequency

Train

best
  1. Take the train from Cardiff Queen Street to Merthyr Tydfiltrain train Aberdare - Merthyr Tydfil / ...
1h 25m
£7–14

Cardiff Bay to Merthyr Tydfil train times

Trains run hourly between Cardiff Bay and Merthyr Tydfil. The earliest departure is at 6:56 AM in the morning, and the last departure from Cardiff Bay is at 11:54 PM which arrives into Merthyr Tydfil at 9:28 AM. All services require a transfer, and take on average 1h 19m. The schedules shown below are for the next available departures.

Departing Saturday, October 10, 2026

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    Transport for WalesTransport for Wales1h 7m • 1 change

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    Transport for WalesTransport for Wales1h 7m • 1 change

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    Transport for WalesTransport for Wales1h 7m • 1 change

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    Transport for WalesTransport for Wales1h 7m • 1 change
  • Show more

Departing Sunday, October 11, 2026

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    Transport for WalesTransport for Wales1h 18m • 1 change

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    Transport for WalesTransport for Wales1h 18m • 1 change

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    Transport for WalesTransport for Wales1h 18m • 1 change

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    Transport for WalesTransport for Wales1h 18m • 1 change
  • Show more

Departing Monday, October 12, 2026

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    Transport for WalesTransport for Wales1h 7m • 1 change

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    Transport for WalesTransport for Wales1h 7m • 1 change

  •  → 

    Transport for WalesTransport for Wales1h 7m • 1 change

  •  → 

    Transport for WalesTransport for Wales1h 7m • 1 change
  • Show more

Frequently asked questions

Want to know about travelling from Cardiff Bay to Merthyr Tydfil? 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.

Map of how to get from Cardiff Bay to Merthyr Tydfil.ExpandLaunch map view
  • Distance: 24.1 mi
  • Duration: 1h 19m

What companies run services between Cardiff Bay, Wales and Merthyr Tydfil, Wales?

Transport for Wales operates a train from Cardiff Queen Street to Merthyr Tydfil hourly. Tickets cost £7–13 and the journey takes 59 min.

Operators