Treforest to Carmarthen Trains

Treforest to Carmarthen trains

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Trip Overview

The average train between Treforest and Carmarthen takes 2h 45m and the fastest train takes 2h 11m. There is a train service every few hours from Treforest to Carmarthen. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

2h 45m
Duration: 88 mi
Distance: £46
Average price: Hourly
Frequency

Train

best

Take the train from Trefforest to Cardiff Centraltrain Merthyr Tydfil - Cardiff Central / ...
Take the train from Cardiff Central to Carmarthentrain Bristol Temple Meads - Haverfordwest / ...

2h 41m

£35–78

Treforest to Carmarthen train times

Trains run hourly between Treforest and Carmarthen. The earliest departure is at 6:06 AM in the morning, and the last departure from Treforest is at 11:27 PM which arrives into Carmarthen at 7:42 AM. All services require a transfer, and take on average 2h 45m. The schedules shown below are for the next available departures.

Departing Monday, August 10, 2026

10:16 AM → 12:36 PM
2h 20m • 1 change
10:51 AM → 1:26 PM
2h 35m • 1 change
12:16 PM → 2:30 PM
2h 14m • 1 change
12:51 PM → 3:28 PM
2h 37m • 1 change
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Departing Tuesday, August 11, 2026

6:06 AM → 8:25 AM
2h 19m • 1 change
6:46 AM → 8:57 AM
2h 11m • 1 change
8:16 AM → 10:31 AM
2h 15m • 1 change
9:21 AM → 11:45 AM
2h 24m • 1 change
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Departing Wednesday, August 12, 2026

6:06 AM → 8:25 AM
2h 19m • 1 change
6:46 AM → 8:57 AM
2h 11m • 1 change
8:16 AM → 10:31 AM
2h 15m • 1 change
9:21 AM → 11:45 AM
2h 24m • 1 change
Show more

Frequently asked questions

Want to know about travelling from Treforest to Carmarthen? 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.