What is the distance between Cardiff and Carmarthen?

The distance between Cardiff and Carmarthen is around 89 km (55 miles).

What are the departure and arrival locations for buses traveling from Cardiff to Carmarthen?

Buses traveling this route start their trip at Sophia Gardens, in Cardiff, and end it at Carmarthen Bus Stop (o/s Bus Stn), in Carmarthen.

Bus from Cardiff to Carmarthen starting at $14 | Compare & Save up to 60%

Next bus departures

Next departures for Cardiff to Carmarthen on November 20
Operated by	Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended	Price and booking link
	Bus	2:50pm	Sophia Gardens	2h 10m	5:00pm	Lammas Street, outside the Boar’s Head	CheapestFastest
	Bus	2:50pm	Sophia Gardens	2h 10m	5:00pm	Lammas Street, outside the Boar’s Head	No tags

Next departures for Cardiff to Carmarthen on November 21
Vehicle type	Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
Bus	4:50pm	Sophia Gardens	2h 15m	7:05pm	Lammas Street, outside the Boar’s Head	CheapestFastest
Bus	2:55pm	Sophia Gardens	3h 35m	6:30pm	Lammas Street, outside the Boar’s Head	No tags
Bus	2:55pm	Sophia Gardens	3h 35m	6:30pm	Lammas Street, outside the Boar’s Head	No tags
Bus	4:50pm	Sophia Gardens	2h 15m	7:05pm	Lammas Street, outside the Boar’s Head	No tags

Last refresh of the prices: Last Saturday at 7:16 PM GMT.

Compare 2 ways to go from Cardiff to Carmarthen

We recommend taking the bus

Among the sustainable travel choices, the bus stands out as a good way to reach Carmarthen. The journey takes about 2 hours 10 minutes, and with fares starting at just $17, it presents an excellent value for a comfortable ride.

1bus per day

2h 10mAverage Duration

88 kmDistance

2kgCO₂ emissions

	Average Price	Average Duration	CO₂ emissions	Actions
Bus	Average Price$17 - $26	Average Duration2h 10m	CO₂ emissions 2kg CO₂e
Train	Average Price$16 - $84	Average Duration1h 51m	CO₂ emissions 2kg CO₂e

Compare bus companies

National Express

4/529,717 reviews

Staff4.7

Timeliness4

Cleanliness4.7

Wifi3.4

Based on 29717 reviews, the company was rated 4.2 stars on Busbud. Travellers were especially satisfied with the ticket access and the staff but often complained with the WiFi. National Express ticket prices on this trip start at $17

National Express Cardiff Carmarthen recent customer reviews

The service was great better on the way back had more i information. Where chargers were situated etc. The waiting times are long and after an hour and a half wait then the connection being delayed a further 45 mins it was rather annoying.

Julia J.

January 3, 2020

excellent service

Mark C.

October 1, 2020

GB Bus Companies: FlixBus, BlaBlaCar Bus, ALSA, Greyhound, Intercape, Trenitalia, Sindbad

Where are the popular stops in Cardiff and Carmarthen?

Stops in Cardiff

A - Sophia Gardens

B - Cardiff University (o/s Cathays Rail Stn)

C - Cardiff Coach Station - Sophia Gardens

D - Cardiff - Castle Street Bus Stop

E - National Museum

F - Cardiff Bus Stop - Westgate

Stops in Carmarthen

A - Carmarthen Bus Stop (o/s Bus Stn)

Frequently asked questions about travelling from Cardiff to Carmarthen by bus

What is the distance between Cardiff and Carmarthen?
The distance between Cardiff and Carmarthen is around 89 km (55 miles).
What are the departure and arrival locations for buses traveling from Cardiff to Carmarthen?
Buses traveling this route start their trip at Sophia Gardens, in Cardiff, and end it at Carmarthen Bus Stop (o/s Bus Stn), in Carmarthen.

Find cheapest prices for buses

Price is for a one-way ticket for one passenger and based on past searches.

Best price found

11-17

$15

11-18

$14

Today

No data

11-20

$14

11-21

$14

11-22

No data

11-23

$14

11-24

$14

The cheapest trip from Cardiff to Carmarthen was searched and found on Nov 21, 2025 with a price of $14

To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Cardiff to Carmarthen, as early as possible.

You can expect to pay from $14 to $31 for a bus ticket from Cardiff to Carmarthen based on the last 2 days. You can expect to find the cheapest price for the trip at $14 which is on 2025-11-21.