The average train between Harrow and Llanelli takes 4h 2m and the fastest train takes 3h 40m. There is a train service every few hours from Harrow 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 Harrow and Llanelli. The earliest departure is at 6:11 AM in the morning, and the last departure from Harrow is at 10:10 PM which arrives into Llanelli at 5:31 AM. All services require a transfer at Paddington station and take an average of 4h 2m. The schedules shown below are for the next available departures.


4h 41m • 2 changes

3h 52m • 2 changes

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3h 48m • 2 changes

4h 12m • 2 changesWant to know about travelling from Harrow 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 Harrow to Llanelli. However, there are services departing from London Paddington station and arriving at Swansea station via Swansea station. The journey, including transfers, takes approximately 4h 2m.
Harrow to Llanelli train services, operated by Great Western Railway (GWR), depart from London Paddington station.
Harrow to Llanelli train services, operated by Great Western Railway (GWR), arrive at Swansea station.
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The distance between Harrow and Llanelli is 264.2 km. The road distance is 308 km.
Great Western Railway (GWR) operates a train from London Paddington to Swansea hourly. Tickets cost £80–150 and the journey takes 2h 48m.