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Trains from Slough to Carmarthen

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CrossCountry
Great Western Railway

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  1. Home
  2. Train times
  3. Slough to Carmarthen

Trains to Carmarthen from Slough

First train

05:22

Last train

22:17

Departure stationSlough
Arrival stationCarmarthen
Journey time

From 3h 42m

Distance

161 miles (259 km)

Frequency

35 trains per day

Changes

1 change

Train operators

CrossCountry, Great Western Railway, Transport for Wales

What are the train times from Slough to Carmarthen?

Check out the next trains departing from Slough to Carmarthen for Tuesday 6th October 2026 using our handy timetable below, including platform and live travel information. You can view the full day timetable or search for a different date here.
DepartsArrivesDuration
10:2214:334h 11m, 2 changes
11:2215:284h 6m, 1 change
12:2316:324h 9m, 2 changes
13:2417:213h 57m, 1 change
14:2418:294h 5m, 2 changes
15:2219:364h 14m, 2 changes
15:3419:554h 21m, 1 change
16:3420:303h 56m, 2 changes
17:4221:393h 57m, 1 change
18:4222:554h 13m, 2 changes

Travel by train from Slough to Carmarthen

Looking to travel from Slough to Carmarthen by train? You've come to the right place!

Generally, the train from Slough to Carmarthen takes around 5 hours 11 minutes, but can take just 3 hours 42 minutes on the fastest services. There are up to 35 trains per day from Slough to Carmarthen.

You'll need to make 1 change along the way as there aren't any direct services on this line.

Great Western Railway, Transport for Wales and CrossCountry trains operate on this route.

Booking early is one of the most effective ways to save money.

Start your search for train tickets from Slough to Carmarthen in our Journey Planner.

What do people frequently ask about the train journey from Slough to Carmarthen?

Want to know more about your journey from Slough to Carmarthen? We've compiled some of the most frequently asked questions by our customers to help you plan your journey.

How do I get from Slough to Carmarthen?

You can travel from Slough to Carmarthen by train in about 5 hours and 11 minutes. With around 35 trains running each day, taking the train is easy. Find out more in our Journey Planner.

How long is the train journey from Slough to Carmarthen?

On average, the train journey from Slough to Carmarthen takes around 5 hours and 11 minutes, with 35 trains per day. The duration may vary slightly depending on the specific train and any potential delays. Use our Journey Planner to check out more information.

What is the fastest train from Slough to Carmarthen?

The fastest trains from Slough to Carmarthen can cover the distance of 161 miles (259 km) in as little as 3 hours and 42 minutes.

Is there a direct train from Slough to Carmarthen?

No, you can’t travel from Slough to Carmarthen on a direct train, you’ll need to make at least 1 change during the journey.

How do I find cheap train tickets from Slough to Carmarthen?

As most UK train companies increase their prices as the departure date approaches, our Trainline team of experts have put together these tips to help you find the cheapest tickets.

1. Sign up to Ticket Alert

If you're planning a trip more than 12 weeks ahead, sign up to our Ticket Alert to get notified when Advance tickets are released for your travel date.

2. Use a Railcard

National Railcards offer a 1/3 off eligible train tickets in the UK and can be a great investment if you travel throughout the year. Buy one with us and you'll be able to store it digitally in our app, so you'll always have it on your travels.

3. Book split tickets

Our handy feature SplitSave will 'split' your train journey into multiple tickets, which can be much cheaper than buying a single ticket. Find out more about split tickets.

4. Travel Off-Peak

If you can be flexible with your travel times, Off-Peak and Super Off-Peak tickets are usually cheaper in the UK. Generally, Off-Peak times are any time at weekends and outside of Monday to Friday morning and evening rush hours.

5. Consider a Season Ticket

Best for commuters, if you catch a train on the same route more than 3 times per week, you could save money with a Season Ticket. With annual, monthly, weekly and flexi options available, find out if a Season Ticket for Slough to Carmarthen is right for you.

For more money-saving tips on UK and European train travel, read our cheap train tickets guide.

§Advance adult single fare. Excludes booking fee. Prices seen by Trainline customers in the last 30 days. Availability limited.
† Average savings on advance fares booked at least one week before day of travel vs Anytime fares purchased on day of travel. Subject to availability. Excludes coach.

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