The average train between Chepstow and Llanelli takes 2h 40m and the fastest train takes 1h 55m. There is a train service every few hours from Chepstow to Llanelli. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run hourly between Chepstow and Llanelli. The earliest departure is at 6:17 AM in the morning, and the last departure from Chepstow is at 11:38 PM which arrives into Llanelli at 7:13 AM. All services require a transfer, and take on average 2h 40m. The schedules shown below are for the next available departures.

2h 25m • 1 change

2h 7m • 1 change

2h 6m • 1 change

2h 1m • 1 change

2h 17m • 1 change

2h 40m • 1 change

1h 57m • 1 change

2h 11m • 1 change

2h 17m • 1 change

2h 40m • 1 change

1h 57m • 1 change

2h 11m • 1 change
Want to know about travelling from Chepstow to Llanelli? 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.
No, there is no direct train from Chepstow to Llanelli. However, there are services departing from Chepstow station and arriving at Llanelli station via Cardiff Central. The journey, including transfers, takes approximately 2h 40m.
Chepstow to Llanelli train services, operated by Cross Country, depart from Chepstow station.
Chepstow to Llanelli train services, operated by Cross Country, arrive at Llanelli station.
Book your Chepstow to Llanelli train tickets online with Cross Country, Transport for Wales and Great Western Railway (GWR).
The distance between Chepstow and Llanelli is 102.5 km. The road distance is 137 km.
You can take a train from Chepstow to Llanelli via Cardiff Central in around 2h 21m.