The average train between Cardiff and Grays takes 3h 17m and the fastest train takes 3h 5m. There is an hourly train service from Cardiff 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 Cardiff and Grays. The earliest departure is at 5:07 AM in the morning, and the last departure from Cardiff is at 9:20 PM which arrives into Grays at 5:42 AM. All services require a transfer at London Paddington and take an average of 3h 17m. The schedules shown below are for the next available departures.


3h 15m • 2 changes


3h 9m • 2 changes


3h 11m • 2 changes


3h 11m • 2 changes


3h 9m • 2 changes


3h 5m • 2 changes


3h 9m • 2 changes


3h 9m • 2 changes


3h 31m • 2 changes


3h 14m • 2 changes


3h 22m • 2 changes


3h 25m • 2 changes
Want to know about travelling from Cardiff 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 Cardiff to Grays. However, there are services departing from Cardiff station and arriving at Grays station via London Paddington. The journey, including transfers, takes approximately 3h 17m.
Cardiff to Grays train services, operated by Great Western Railway (GWR), depart from Cardiff Central station.
Cardiff to Grays train services, operated by Great Western Railway (GWR), arrive at London Paddington station.
Book your Cardiff to Grays train tickets online with Great Western Railway (GWR), London Underground (Tube) and c2c.
The distance between Cardiff and Grays is 242.7 km. The road distance is 271 km.
Great Western Railway (GWR) operates a train from Cardiff Central to London Paddington hourly. Tickets cost £60–130 and the journey takes 2h 19m.