Harlow to Carmarthen Trains

Harlow to Carmarthen trains

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Trip Overview

The average train between Harlow and Carmarthen takes 5h 5m and the fastest train takes 4h 40m. There is a train service every few hours from Harlow 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 5m
Duration: 248 mi
Distance: £127
Average price: Hourly
Frequency

Train via Swansea

best

Take the train from London Paddington to Swanseatrain London Paddington - Swansea / ...
Take the train from Swansea to Carmarthentrain Bristol Temple Meads - Milford Haven / ...

5h 21m

£99–193

Harlow to Carmarthen train times

Trains run hourly between Harlow and Carmarthen. The earliest departure is at 5:31 AM in the morning, and the last departure from Harlow is at 9:38 PM which arrives into Carmarthen at 6:47 AM. All services require a transfer at London Liverpool Street and take an average of 5h 5m. The schedules shown below are for the next available departures.

Departing Wednesday, November 4, 2026

6:08 PM → 10:55 PM
4h 46m • 3 changes
6:37 PM → 11:29 PM
4h 52m • 3 changes
7:37 PM → 12:37 AM
Arrives next day
5h • 3 changes
8:38 PM → 1:38 AM
Arrives next day
4h 59m • 3 changes
Show more

Departing Thursday, November 5, 2026

5:31 AM → 10:30 AM
4h 59m • 3 changes
6:43 AM → 11:45 AM
5h 2m • 3 changes
7:43 AM → 12:36 PM
4h 53m • 3 changes
8:43 AM → 1:26 PM
4h 43m • 3 changes
Show more

Departing Friday, November 6, 2026

5:31 AM → 10:30 AM
4h 59m • 3 changes
6:43 AM → 11:45 AM
5h 2m • 3 changes
7:43 AM → 12:36 PM
4h 53m • 3 changes
8:43 AM → 1:26 PM
4h 43m • 3 changes
Show more

Departing Saturday, November 7, 2026

5:45 AM → 10:25 AM
4h 40m • 3 changes
6:38 AM → 11:49 AM
5h 10m • 3 changes
7:38 AM → 12:27 PM
4h 48m • 3 changes
8:38 AM → 1:48 PM
5h 9m • 3 changes
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Departing Sunday, November 8, 2026

7:29 AM → 1:05 PM
5h 35m • 3 changes
8:28 AM → 1:16 PM
4h 47m • 3 changes
9:37 AM → 2:50 PM
5h 13m • 3 changes
10:37 AM → 3:20 PM
4h 43m • 3 changes
Show more

Departing Monday, November 9, 2026

5:31 AM → 10:30 AM
4h 59m • 3 changes
6:43 AM → 11:45 AM
5h 2m • 3 changes
7:43 AM → 12:36 PM
4h 53m • 3 changes
8:43 AM → 1:26 PM
4h 43m • 3 changes
Show more

Departing Tuesday, November 10, 2026

5:31 AM → 10:30 AM
4h 59m • 3 changes
6:43 AM → 11:45 AM
5h 2m • 3 changes
7:43 AM → 12:36 PM
4h 53m • 3 changes
8:43 AM → 1:26 PM
4h 43m • 3 changes
Show more

Frequently asked questions

Want to know about travelling from Harlow 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.