The South Wales Main Line
The South Wales Main Line links 29 stations, with a top line speed of 125 mph.
See the South Wales Main Line on the live map
The map draws the line on its own, names every station along it, and shows the trains running on it right now.
The line in numbers
| Track | about 385 miles, counting every running line |
|---|---|
| Stations | 29 |
| Top line speed | 125 mph |
| Passengers a year | 22.9 million entries and exits across its stations |
| Engineer's Line Reference | SWM2, SWB, BSW, FEC |
No end-to-end length is given for this line because OpenStreetMap applies its name to several separate stretches of track, so any figure measured from the map data would be a fragment of the real route rather than the whole of it.
Stations on this line
- Bristol Parkway2.3 million a year
- Patchway94,176 a year
- Pilning294 a year
- Caldicot87,972 a year
- Severn Tunnel Junction212,668 a year
- Newport2.8 million a year
- Cardiff Central12.5 million a year
- Ninian Park156,046 a year
- Pontyclun277,812 a year
- Llanharan125,092 a year
- Pencoed232,302 a year
- Bridgend1.4 million a year
- Pyle104,258 a year
- Port Talbot Parkway612,070 a year
- Baglan35,200 a year
- Neath838,778 a year
- Briton Ferry41,642 a year
- Skewen43,980 a year
- Llansamlet38,484 a year
- Gowerton158,620 a year
- Llanelli392,682 a year
- Pembrey and Burry Port130,610 a year
- Kidwelly34,566 a year
- Ferryside16,476 a year
- Whitland44,580 a year
- Clunderwen22,754 a year
- Clarbeston Road7,670 a year
- Haverfordwest113,300 a year
- Johnston9,062 a year
The busiest station on the line is Cardiff Central, 12.5 million entries and exits a year and 37th busiest in Britain.
Freight on this line, hour by hour
Freight is booked over the South Wales Main Line on 1,323 paths in the week beginning 12 October 2026: 245 paths on the Wednesday, 105 paths on the Saturday and 52 paths on the Sunday. 296 of them run whatever the traffic; the rest are held in the timetable and used only when there is something to move. The busiest hour is 19:00 to 20:00 on the Wednesday, with 35 paths booked.
The grid counts the goods trains booked to pass in each hour of the week beginning 12 October 2026: the darker the hour, the more paths, and a dot marks an hour with at least one path that runs regardless. Engineering trains, empty stock and light engines are not counted. Across Britain only about a fifth of booked freight paths run on a given day, so a booked path is a possibility rather than a promise; the freight statistics page explains how that is measured.
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Paths booked in the hournone12 to 34 to 78 to 1516 or moreone runs regardless
Lines it meets
Cardiff City Line, Gloucester to Newport Line, Pembroke & Tenby Railway, Vale of Glamorgan Line.
Passenger figures are the Office of Rail and Road's estimates of station usage for 2024-25, added up across the stations on this line. They count entries and exits at those stations rather than journeys along the line, and a station served by more than one line is counted for each of them.
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