Reading ▸ Carmarthen
Carmarthen ▸ Reading ⇄Direct buses · no change
- 12:45 → 17:45National Express 508Reading, Mereoak Lane - Park & Ride → Carmarthen, Rose and Crown · via Cardiff, Swansea, Ammanford5h004 stopsRuns: Mon to ThuBook on National Express ↗
- 13:15 → 17:45National Express 508Reading, Mereoak Lane - Park & Ride → Carmarthen, Rose and Crown · via Bridgend, Swansea, Ammanford4h305 stopsRuns: Sat, SunBook on National Express ↗
- 13:20 → 18:30National Express 508Reading, Mereoak Lane - Park & Ride → Carmarthen, Rose and Crown · via Bridgend, Swansea, Ammanford5h105 stopsRuns: Only Fri 30 Oct, Fri 6 Nov, Fri 13 Nov, Fri 20 NovBook on National Express ↗
Local times at each stop. Times from official open data: National Coach Services Dataset (Department for Transport) (file of 23 Oct 2026). Checked Thu 29 Oct 2026; they cover 29 Oct to 25 Nov 2026. Timetables change, so check with the operator before you travel. A bus from a company that publishes no open timetable may be missing. Contains public sector information licensed under the Open Government Licence v3.0: the National Coach Services Dataset (Department for Transport), taken from the Bus Open Data Service website. How we build this.
Quick answers
Is there a direct bus from Reading to Carmarthen?
Yes. 1 a day on average, with National Express, no change of bus (29 Oct to 25 Nov 2026).
How long is the bus from Reading to Carmarthen?
The fastest takes 4h30; the slowest 5h10, for 234 km as the crow flies.
When do the buses leave?
The earliest leaves at 12:45 and the latest at 13:20, local time in Reading. Not every bus runs every day: pick a date above.
Is there a night bus from Reading to Carmarthen?
Not an overnight one: every bus here travels by day or evening.