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Peterborough to Carmarthen trains

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Trip Overview

The average train between Peterborough and Carmarthen takes 5h 38m and the fastest train takes 4h 50m. There is a train service every few hours from Peterborough 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 38m
Duration
300 mi
Distance
£150
Average price
Hourly
Frequency

Train via London

best
  1. Take the train from Peterborough to King's Crosstrain train
  2. Take the train from London Paddington to Swanseatrain train
  3. Take the train from Swansea to Carmarthentrain train
5h 29m
£114–238

Peterborough to Carmarthen train times

Trains run hourly between Peterborough and Carmarthen. The earliest departure is at 3:23 AM at night, and the last departure from Peterborough is at 9:10 PM which arrives into Carmarthen at 6:47 AM. All services require a transfer at London Kings Cross and take an average of 5h 38m. The schedules shown below are for the next available departures.

Departing Monday, October 12, 2026

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    ThameslinkLondon Underground (Tube)Great Western Railway (GWR)Transport for Wales7h 7m • 3 changes

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    London North Eastern Railway Limited (LNER)London Underground (Tube)Great Western Railway (GWR)Transport for Wales5h 25m • 3 changes

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    London North Eastern Railway Limited (LNER)London Underground (Tube)Great Western Railway (GWR)Transport for Wales5h 2m • 3 changes

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    London North Eastern Railway Limited (LNER)London Underground (Tube)Great Western Railway (GWR)Great Western Railway (GWR)4h 57m • 3 changes
  • Show more

Departing Tuesday, October 13, 2026

  •  → 

    ThameslinkLondon Underground (Tube)Great Western Railway (GWR)Transport for Wales7h 7m • 3 changes

  •  → 

    London North Eastern Railway Limited (LNER)London Underground (Tube)Great Western Railway (GWR)Transport for Wales5h 25m • 3 changes

  •  → 

    London North Eastern Railway Limited (LNER)London Underground (Tube)Great Western Railway (GWR)Transport for Wales5h 2m • 3 changes

  •  → 

    London North Eastern Railway Limited (LNER)London Underground (Tube)Great Western Railway (GWR)Great Western Railway (GWR)4h 57m • 3 changes
  • Show more

Departing Wednesday, October 14, 2026

  •  → 

    ThameslinkLondon Underground (Tube)Great Western Railway (GWR)Transport for Wales7h 7m • 3 changes

  •  → 

    London North Eastern Railway Limited (LNER)London Underground (Tube)Great Western Railway (GWR)Transport for Wales5h 25m • 3 changes

  •  → 

    London North Eastern Railway Limited (LNER)London Underground (Tube)Great Western Railway (GWR)Transport for Wales5h 2m • 3 changes

  •  → 

    London North Eastern Railway Limited (LNER)London Underground (Tube)Great Western Railway (GWR)Great Western Railway (GWR)4h 57m • 3 changes
  • Show more

Frequently asked questions

Want to know about travelling from Peterborough 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.

Map of how to get from Peterborough to Carmarthen.ExpandLaunch map view
  • Distance: 300 mi
  • Duration: 5h 38m

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

You can take a train from Peterborough to Carmarthen via London Kings Cross, King's Cross St. Pancras station, Paddington, London Paddington, and Swansea in around 5h 29m.

Operators