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Carmarthen to Windsor Castle trains

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Trip Overview

The average train between Carmarthen and Windsor Castle takes 4h 43m and the fastest train takes 3h 59m. There is a train service every few hours from Carmarthen to Windsor Castle. 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 43m
Duration
207 mi
Distance
£109
Average price
Hourly
Frequency

Train

best
  1. Take the train from Carmarthen to Readingtrain train Carmarthen - London Paddington / ...
4h 25m
£88–169

Carmarthen to Windsor Castle train times

Trains run hourly between Carmarthen and Windsor Castle. The earliest departure is at 4:37 AM at night, and the last departure from Carmarthen is at 10:41 PM which arrives into Windsor Castle at 7:36 AM. All services require a transfer at Reading and take an average of 4h 43m. The schedules shown below are for the next available departures.

Departing Sunday, October 18, 2026

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    Transport for WalesGreat Western Railway (GWR)Elizabeth Line (TfL)Great Western Railway (GWR)4h 49m • 3 changes

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    Great Western Railway (GWR)Great Western Railway (GWR)Great Western Railway (GWR)Great Western Railway (GWR)4h 1m • 3 changes

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    Arrives next day

    Transport for WalesGreat Western Railway (GWR)Elizabeth Line (TfL)Great Western Railway (GWR)9h 2m • 3 changes

Departing Monday, October 19, 2026

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    Transport for WalesGreat Western Railway (GWR)Elizabeth Line (TfL)Great Western Railway (GWR)3h 59m • 3 changes

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    Transport for WalesGreat Western Railway (GWR)Great Western Railway (GWR)Great Western Railway (GWR)4h 44m • 3 changes

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    Transport for WalesGreat Western Railway (GWR)Great Western Railway (GWR)Great Western Railway (GWR)4h 24m • 3 changes

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    Great Western Railway (GWR)Great Western Railway (GWR)Elizabeth Line (TfL)Great Western Railway (GWR)4h 13m • 3 changes
  • Show more

Departing Tuesday, October 20, 2026

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    Transport for WalesGreat Western Railway (GWR)Elizabeth Line (TfL)Great Western Railway (GWR)3h 59m • 3 changes

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    Transport for WalesGreat Western Railway (GWR)Great Western Railway (GWR)Great Western Railway (GWR)4h 44m • 3 changes

  •  → 

    Transport for WalesGreat Western Railway (GWR)Great Western Railway (GWR)Great Western Railway (GWR)4h 24m • 3 changes

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    Great Western Railway (GWR)Great Western Railway (GWR)Elizabeth Line (TfL)Great Western Railway (GWR)4h 13m • 3 changes
  • Show more

Departing Wednesday, October 21, 2026

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    Transport for WalesGreat Western Railway (GWR)Elizabeth Line (TfL)Great Western Railway (GWR)3h 59m • 3 changes

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    Transport for WalesGreat Western Railway (GWR)Great Western Railway (GWR)Great Western Railway (GWR)4h 44m • 3 changes

  •  → 

    Transport for WalesGreat Western Railway (GWR)Great Western Railway (GWR)Great Western Railway (GWR)4h 24m • 3 changes

  •  → 

    Great Western Railway (GWR)Great Western Railway (GWR)Elizabeth Line (TfL)Great Western Railway (GWR)4h 13m • 3 changes
  • Show more

Frequently asked questions

Want to know about travelling from Carmarthen to Windsor Castle? 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.

Map of how to get from Carmarthen to Windsor Castle.ExpandLaunch map view
  • Distance: 206.7 mi
  • Duration: 4h 43m

What companies run services between Carmarthen, Wales and Windsor Castle, Windsor and Maidenhead, England?

Great Western Railway (GWR) operates a train from Carmarthen to Reading every 4 hours. Tickets cost £75–140 and the journey takes 3h 24m.

Operators