Train
Driving
Merthyr Tydfil to Cardiff
Updated: 28 May 2026
The journey from Merthyr Tydfil to Cardiff is a short, 25-mile trip south through the heart of the South Wales Valleys. You can take a direct train from Merthyr Tydfil station to Cardiff Central, which is a scenic and efficient route. Alternatively, driving via the A470 is a straightforward journey that typically takes 45 to 60 minutes depending on traffic. This is a primary commuter route, making it very well-connected.
Total Distance: 40 km driving distance and 35 km straight-line air distance.
Fastest Way
Driving is usually faster outside of peak hours, taking about 45 minutes.
Cheapest Way
Train travel is very affordable and avoids city center parking costs.
Compare Merthyr Tydfil to Cardiff Routes
|
Direct
|
Direct
|
|
|---|---|---|
| Duration | 1 hour | 50 mins |
| Avg Price | £7 - £12 | £5 - £8 fuel |
| Operator | Transport for Wales | Personal Vehicle |
| Route | Merthyr Tydfil to Cardiff Central. | A470. |
| Tip | Trains run frequently throughout the day. | The A470 can be busy during peak hours; allow extra time. |
Travel Tips
-
Use the TrainIt is the most stress-free way to reach the city center.
-
Avoid Rush HourTraffic on the A470 is heavy between 08:00 and 09:00.
-
ParkingUse the St David's shopping center car park for easy access.
-
Check TimetablesUse the Transport for Wales app for live updates.
-
Walkable CityOnce in Cardiff, most attractions are within walking distance.
Safety Tips
-
Road SafetyThe A470 has many speed cameras; stick to the limit.
-
Station SafetyCardiff Central is busy; keep your belongings close.
-
Night TravelStick to well-lit areas when walking at night.
-
Emergency NumbersKeep local taxi numbers saved in your phone.
People Also Ask
-
Is there a direct train?Yes, Transport for Wales runs direct services.
-
How long is the drive?Usually 45 to 60 minutes.
-
Is it easy to park?Yes, there are many multi-story car parks.
-
What is the best way to travel?The train is generally the most convenient.
-
Are there buses?Yes, there are regular bus services between the two.
Quick Info
- From Merthyr Tydfil, Merthyr Tydfil, United Kingdom
- To Cardiff, South Glamorgan, United Kingdom
-
Modes
Best Time to Travel
Any time of year, though morning and evening rush hours should be avoided.
Things to Do in Cardiff
1
Cardiff Castle
Explore this historic castle in the heart of the city. It is a must-see attraction.
2
National Museum Cardiff
Discover art, archaeology, and natural history in this free museum.
3
Principality Stadium
Take a tour of this iconic stadium, home to Welsh rugby.
4
Cardiff Bay
Enjoy the waterfront, restaurants, and the Senedd building.
Tags
Merthyr Tydfil to Cardiff
travel to Cardiff
train to Cardiff
driving Merthyr to Cardiff
South Wales travel
A470 route
Cardiff transport
commuter travel
Wales travel guide
fastest way to Cardiff
