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Cardiff to Slough by train
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First train05:12
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Last train23:27
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Avg changes1
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Fastest journey1hr 44m
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Distance178 kilometres
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Trains per day69
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Avg. journey time2hr 50m
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Train operators
Travelling from Cardiff to Slough by train
Fast trains from Cardiff to Slough take around 1 hour and 44 minutes, covering a distance of approximately 178 kilometres. There are frequent services on the rail route between Cardiff and Slough.
1. Are there direct trains from Cardiff to Slough?
Journeys between Cardiff and Slough usually involve one change of train.
We usually find around 66 departures on the route from Cardiff to Slough every weekday that leave enough time to change trains without waiting around for longer than necessary.
Trains are typically more frequent on weekends, when we found around 78 departures.
2. How long is the train journey from Cardiff to Slough?
The Cardiff to Slough train travel time is normally about 1 hour and 44 minutes, whatever time you make the journey.
3. What are the Cardiff to Slough train times and schedule?
On weekdays the earliest train to Slough is usually scheduled to depart Cardiff around 05:12 and the last train is around 23:27. At weekends the first train of the day leaves Cardiff around 04:55, and the last at 23:11.

When to book Cardiff to Slough train tickets?
Trains in the UK usually open for booking around 3 months in advance. If booking is not yet open for your dates then you can set a booking alert to receive an email on the day that the cheapest tickets are released for your journey from Cardiff to Slough by train.
Which train companies operate between Cardiff and Slough?
More than one train company operates on the route from Cardiff to Slough, so you’ll be travelling with one or more of the following rail operators:
- First Great Western
- GWR
- Great Western Railway
- TfL Rail
You can check which train you’ll be travelling on by looking for the train name in search results.
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