Chelmsford to Carmarthen Trains

Chelmsford to Carmarthen trains

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Trip Overview

The average train between Chelmsford and Carmarthen takes 5h 6m and the fastest train takes 4h 40m. There is a train service every few hours from Chelmsford 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.

5h 6m
Duration: 255 mi
Distance: £133
Average price: Hourly
Frequency

Train via Swansea

best

Take the train from Chelmsford to Stratford (London)train
Take the train from London Paddington to Swanseatrain
Take the train from Swansea to Carmarthentrain

5h 25m

£108–206

Chelmsford to Carmarthen train times

Trains run hourly between Chelmsford and Carmarthen. The earliest departure is at 5:41 AM in the morning, and the last departure from Chelmsford is at 9:41 PM which arrives into Carmarthen at 6:47 AM. All services require a transfer at Stratford and take an average of 5h 6m. The schedules shown below are for the next available departures.

Departing Tuesday, October 20, 2026

9:42 AM → 2:30 PM
4h 48m • 3 changes
10:41 AM → 3:28 PM
4h 47m • 3 changes
11:41 AM → 4:29 PM
4h 48m • 3 changes
12:41 PM → 5:21 PM
4h 40m • 3 changes
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Departing Wednesday, October 21, 2026

5:41 AM → 10:30 AM
4h 49m • 3 changes
6:39 AM → 11:45 AM
5h 5m • 3 changes
7:44 AM → 12:36 PM
4h 52m • 3 changes
8:43 AM → 1:26 PM
4h 42m • 3 changes
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Departing Thursday, October 22, 2026

5:41 AM → 10:30 AM
4h 49m • 3 changes
6:39 AM → 11:45 AM
5h 5m • 3 changes
7:44 AM → 12:36 PM
4h 52m • 3 changes
8:43 AM → 1:26 PM
4h 42m • 3 changes
Show more

Frequently asked questions

Want to know about travelling from Chelmsford 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.