Carmarthen to Watford Trains

Carmarthen to Watford trains

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Trip Overview

The average train between Carmarthen and Watford takes 4h 50m and the fastest train takes 4h 43m. The train service runs several times per day from Carmarthen to Watford. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

4h 50m
Duration: 236 mi
Distance: £127
Average price: Every 4 hours
Frequency

Train

best

Take the train from Carmarthen to London Paddingtontrain Carmarthen - London Paddington

4h 43m

£107–189

Carmarthen to Watford train times

Trains run every 4 hours between Carmarthen and Watford. The earliest departure is at 7:23 AM in the morning, and the last departure from Carmarthen is at 7:20 PM which arrives into Watford at 12:28 AM. All services require a transfer at London Paddington and take an average of 4h 50m. The schedules shown below are for the next available departures.

Departing Thursday, October 8, 2026

2:20 PM → 7:11 PM
4h 51m • 2 changes
4:19 PM → 9:13 PM
4h 54m • 2 changes
6:20 PM → 11:13 PM
4h 53m • 2 changes

Departing Friday, October 9, 2026

7:23 AM → 12:13 PM
4h 50m • 2 changes
9:21 AM → 2:13 PM
4h 52m • 2 changes
11:27 AM → 4:13 PM
4h 46m • 2 changes
2:20 PM → 7:11 PM
4h 51m • 2 changes
Show more

Departing Saturday, October 10, 2026

7:24 AM → 12:13 PM
4h 49m • 2 changes
9:30 AM → 2:13 PM
4h 43m • 2 changes
11:30 AM → 4:13 PM
4h 43m • 2 changes
1:30 PM → 6:13 PM
4h 43m • 2 changes
Show more

Departing Sunday, October 11, 2026

11:25 AM → 4:13 PM
4h 48m • 2 changes
2:15 PM → 7:13 PM
4h 58m • 2 changes
4:30 PM → 9:13 PM
4h 43m • 2 changes
7:20 PM → 12:28 AM
Arrives next day
5h 8m • 2 changes

Departing Monday, October 12, 2026

7:23 AM → 12:13 PM
4h 50m • 2 changes
9:21 AM → 2:13 PM
4h 52m • 2 changes
11:27 AM → 4:13 PM
4h 46m • 2 changes
2:20 PM → 7:11 PM
4h 51m • 2 changes
Show more

Departing Tuesday, October 13, 2026

7:23 AM → 12:13 PM
4h 50m • 2 changes
9:21 AM → 2:13 PM
4h 52m • 2 changes
11:27 AM → 4:13 PM
4h 46m • 2 changes
2:20 PM → 7:11 PM
4h 51m • 2 changes
Show more

Departing Wednesday, October 14, 2026

7:23 AM → 12:13 PM
4h 50m • 2 changes
9:21 AM → 2:13 PM
4h 52m • 2 changes
11:27 AM → 4:13 PM
4h 46m • 2 changes
2:20 PM → 7:11 PM
4h 51m • 2 changes
Show more

Frequently asked questions

Want to know about travelling from Carmarthen to Watford? 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.

Carmarthen to Watford trains

Find Transport to Watford

Trip Overview

Train

Carmarthen to Watford train times

Departing Thursday, October 8, 2026

2:20 PM → 7:11 PM

4:19 PM → 9:13 PM

6:20 PM → 11:13 PM

Departing Friday, October 9, 2026

7:23 AM → 12:13 PM

9:21 AM → 2:13 PM

11:27 AM → 4:13 PM

2:20 PM → 7:11 PM

Departing Saturday, October 10, 2026

7:24 AM → 12:13 PM

9:30 AM → 2:13 PM

11:30 AM → 4:13 PM

1:30 PM → 6:13 PM

Departing Sunday, October 11, 2026

11:25 AM → 4:13 PM

2:15 PM → 7:13 PM

4:30 PM → 9:13 PM

7:20 PM → 12:28 AMArrives next day

Departing Monday, October 12, 2026

7:23 AM → 12:13 PM

9:21 AM → 2:13 PM

11:27 AM → 4:13 PM

2:20 PM → 7:11 PM

Departing Tuesday, October 13, 2026

7:23 AM → 12:13 PM

9:21 AM → 2:13 PM

11:27 AM → 4:13 PM

2:20 PM → 7:11 PM

Departing Wednesday, October 14, 2026

7:23 AM → 12:13 PM

9:21 AM → 2:13 PM

11:27 AM → 4:13 PM

2:20 PM → 7:11 PM

Frequently asked questions

What companies run services between Carmarthen, Wales and Watford, England?

Train from Carmarthen to London Paddington

Train from Carmarthen to Swansea

Train from Swansea to London Paddington

Train trips from Carmarthen

Train trips to Watford

Alternative transport options

7:20 PM → 12:28 AM
Arrives next day