The average train between Swansea and Grays takes 4h 15m and the fastest train takes 4h 4m. There is a train service every few hours from Swansea to Grays. 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 Swansea and Grays. The earliest departure is at 3:46 AM at night, and the last departure from Swansea is at 8:23 PM which arrives into Grays at 12:28 AM. All services require a transfer at London Paddington and take an average of 4h 15m. The schedules shown below are for the next available departures.


4h 52m • 2 changes


4h 9m • 2 changes


4h 17m • 2 changes


4h 19m • 2 changes


4h 52m • 2 changes


4h 9m • 2 changes


4h 17m • 2 changes


4h 19m • 2 changes


4h 52m • 2 changes


4h 9m • 2 changes


4h 17m • 2 changes


4h 19m • 2 changes
Want to know about travelling from Swansea to Grays? 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 Swansea to Grays. However, there are services departing from Swansea station and arriving at Grays station via London Paddington. The journey, including transfers, takes approximately 4h 15m.
Swansea to Grays train services, operated by Great Western Railway (GWR), depart from Swansea station.
Swansea to Grays train services, operated by Great Western Railway (GWR), arrive at London Paddington station.
Book your Swansea to Grays train tickets online with Great Western Railway (GWR), London Underground (Tube) and c2c.
The distance between Swansea and Grays is 295.5 km. The road distance is 344 km.
Great Western Railway (GWR) operates a train from Swansea to London Paddington hourly. Tickets cost £85–170 and the journey takes 2h 52m.