| First train | 03:43 | |
|---|---|---|
| Last train | 21:57 | |
| Departure station | London Kings Cross | |
| Arrival station | Merthyr Tydfil | |
| Journey time | From 3h 44m | |
| Distance | 140 miles (226 km) | |
| Frequency | 23 trains per day | |
| Changes | 2 changes | |
| Train operators |
Get from London Kings Cross to Merthyr Tydfil in as little as 3 hours 44 minutes on the fastest trains, so you can make the most of your time.
The average train journey from London Kings Cross to Merthyr Tydfil takes around 4 hours 59 minutes. There are around 23 trains that operate on this route daily.
As there are no direct trains between London Kings Cross and Merthyr Tydfil, you'll need to make 2 changes.
Great Western Railway, Transport for Wales and CrossCountry trains run on this route.
Booking in advance often results in cheaper ticket prices.
With our Journey Planner, you can check live train times, compare prices and check routes.
For more money-saving tips on UK and European train travel, read our cheap train tickets guide.