T4 Llanidloes ↔ Merthyr Tydfil
Operated by Celtic Travel. First bus 06:00, last bus 23:18. 68 journeys on weekdays.
💷 The England fare cap doesn't apply in Wales — Celtic Travel sets the fares on the T4. Check their website or the Traveline Cymru fare finder for current prices. Who travels free →
🕰 Celtic Travel last updated this timetable on 2023-12-07 —
over 2 years ago.
Times below may not match what runs today. How we know →
Timetable
Times are shown at the route's main timing stops — buses serve all stops in between. For times at your exact stop, open the stop's own page.
towards Merthyr Tydfil · Monday to Friday towards Merthyr Tydfil · Saturday towards Merthyr Tydfil · Sunday towards Llanidloes · Monday to Friday towards Llanidloes · Saturday towards Llanidloes · Sunday
| Millennium Garden (nr) | 06:00 | 06:05 | · | 06:50 | 06:50 | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Post Office (before) | 06:34 | · | · | 07:24 | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · |
| Newtown Bus Station Stand 2 | · | 06:35 | · | · | 07:19 | · | · | 08:35 | 09:19 | · | 10:05 | · | · | 11:19 | 12:05 | · | · | 13:19 | 14:05 | 14:05 | · | · | 15:19 | 16:05 | 16:05 | · | · | 17:19 | 18:05 | · | 18:49 | · | 20:15 | · |
| Dolfor Church (before) | · | 06:49 | · | · | 07:33 | · | · | 08:49 | 09:33 | · | 10:19 | · | · | 11:33 | 12:19 | · | · | 13:33 | 14:19 | 14:19 | · | · | 15:33 | 16:26 | 16:19 | · | · | 17:33 | 18:19 | · | 19:03 | · | 20:29 | · |
| Lion Hotel (before) | · | 07:07 | · | · | 07:51 | · | · | 09:07 | 09:51 | · | 10:37 | · | · | 11:51 | 12:37 | · | · | 13:51 | 14:37 | 14:37 | · | · | 15:51 | 16:44 | 16:37 | · | · | 17:51 | 18:37 | · | 19:21 | · | 20:47 | · |
| Penybryn (before) | · | 07:19 | · | · | 08:03 | · | · | 09:19 | 10:03 | · | 10:49 | · | · | 12:03 | 12:49 | · | · | 14:03 | 14:49 | 14:49 | · | · | 16:03 | 16:56 | 16:49 | · | · | 18:03 | 18:49 | · | 19:33 | · | 20:59 | · |
| Sunny Haven Park (opp) | · | 07:37 | · | · | · | · | 08:20 | 09:37 | 10:20 | · | 11:07 | · | · | 12:20 | 13:07 | · | · | 14:20 | 15:07 | 15:07 | · | · | 16:20 | 17:12 | 17:07 | · | · | 18:20 | 19:07 | · | 19:50 | · | 21:17 | · |
| Groe (at) | 06:44 | 07:51 | · | 07:36 | · | · | 08:34 | 09:51 | 10:34 | · | 11:21 | · | · | 12:34 | 13:21 | · | · | 14:34 | 15:20 | 15:21 | · | · | 16:34 | 17:26 | 17:21 | · | · | 18:34 | 19:21 | · | 20:04 | · | 21:31 | · |
| Post Office (nr former) | 06:57 | 08:03 | · | 07:48 | · | · | 08:46 | 10:03 | 10:46 | · | 11:33 | · | · | 12:46 | 13:33 | · | · | 14:46 | 15:49 | 15:33 | · | · | 16:46 | 17:38 | 17:33 | · | · | 18:46 | 19:33 | · | 20:16 | · | 21:43 | · |
| Griffin Inn (opp) | 07:04 | 08:14 | · | 07:54 | · | · | 08:52 | 10:14 | 10:52 | · | 11:44 | · | · | 12:52 | 13:44 | · | · | 14:52 | 15:55 | 15:44 | · | · | 16:52 | 17:49 | 17:44 | · | · | 18:52 | 19:44 | · | 20:22 | · | 21:54 | · |
| Brecon College (opp) | 07:16 | 08:30 | · | 08:11 | · | · | 09:08 | 10:30 | 11:08 | · | 12:00 | · | · | 13:08 | 14:00 | · | · | 15:08 | 16:11 | 16:00 | · | · | 17:08 | 18:05 | 18:00 | · | · | 19:08 | 20:00 | · | 20:38 | · | 22:10 | · |
| Libanus (at) | 07:35 | 08:50 | 06:35 | 08:29 | · | 07:29 | 09:29 | 10:46 | 11:29 | 09:50 | 12:20 | 10:29 | 11:20 | 13:29 | 14:20 | 12:29 | 13:20 | 15:29 | 16:31 | 16:20 | 14:29 | 15:20 | 17:29 | 18:25 | 18:25 | 16:29 | 17:25 | 19:29 | · | 18:29 | · | 20:25 | 22:30 | 21:29 |
| Cyfarthfa Retail Park (in) | 07:56 | 09:11 | 06:56 | 08:50 | · | 07:50 | 09:50 | 11:07 | 11:50 | 10:11 | 12:41 | 10:50 | 11:41 | 13:50 | 14:41 | 12:50 | 13:41 | 15:50 | 16:52 | 16:41 | 14:50 | 15:41 | 17:50 | 18:46 | 18:46 | 16:50 | 17:46 | 19:50 | · | 18:50 | · | 20:46 | 22:51 | 21:50 |
| Merthyr Bus Station 7 | 07:59 | 09:14 | 06:59 | · | · | · | · | 11:10 | 11:53 | 10:14 | 12:44 | 10:53 | 11:44 | 13:53 | 14:44 | 12:53 | 13:44 | 15:53 | 16:55 | 16:44 | 14:53 | 15:44 | · | · | · | 16:53 | 17:49 | · | · | · | · | · | · | · |
Route map
All stops on route T4
T4 towards Merthyr Tydfil
- Red Lion Hotel (o/s) Llanidloes
- Millennium Garden (nr) Llanidloes
- Hillfield (opp) Llanidloes
- Llanidloes High School (opp) Llanidloes
- Cwmbelan Turn (after) Llanidloes
- Bwlch-y-garreg (nr) Cwmbelan
- Dolfach-isaf (nr) Dolfach
- Pont Marteg (before) Nantserth
- Bryn Gwy (after) Rhayader
- Lamb and Flag Rhayader
- Llanwrthwl Bridge (before) Llanwrthwl
- Post Office (opp) Doldowlod
- Argoed Mill (o/s) Argoed
- Newbridge-on-Wye Primary School (o/s) Newbridge on Wye
- Post Office (before) Newbridge on Wye
- New Inn (o/s) Newbridge on Wye
- Llanidloes Army Cadet Centre (o/s) Llanidloes
- Dolwen Turn (before) Dolwen
- Llandinam Bus Shelter (o/s) Llandinam
- Penstrowed Bridge (before) Newtown
- Newtown College (o/s) Mochdre
- Flying Shuttle (nr) Trehafren
- Hill View Close (after) Trehafren
- Ladywell House (before) Newtown
- Park Street Newtown
- Newtown Bus Station Stand 2 Newtown
- Hill View Close (before) Trehafren
- Flying Shuttle (nr) Trehafren
- Newtown College (in) Mochdre
- Plantation Lane (before) Garth Owen
- Garrig Layby (E-bound) Dolfor
- Dolfor Church (before) Dolfor
- Camnant (nr) Camnant
- Llaithddu Turn (before) Llaithddu
- Dolaucwmffrwd Turn (opp) Llanbadarn Fynydd
- New Inn (before) Llanbadarn Fynydd
- Maes-yr-helem Bridge (after) Llanbadarn Fynydd
- Llananno Bridge (after) Llananno
- Lion Hotel (before) Llanbister Road
- Ithon View (nr) Llanddewi Ystradenny
- St David`s Church (before) Llanddewi Ystradenny
- Crossways (opp) Crossway
- Rock Road (before) Fron
- Builders Arms (before) Crossgates
- Tan-y-Fron (o/s) Fron
- Penybryn (before) Crossgates
- Swiss Villa (opp) Llandrindod Wells
- Tremont Road (o/s Celf Centre) Llandrindod Wells
- Llandrindod Wells Interchange Stand 3 Llandrindod Wells
- Post Office (before) Llandrindod Wells
- Auto Palace (before) Llandrindod Wells
- Ridgebourne (o/s) Llandrindod Wells
- Grosvenor Stores (before) Llandrindod Wells
- Pentrosfa (o/s) Llandrindod Wells
- Howey Village (after) Howey
- Llwyn-dderw (nr) Howey
- Sunny Haven Park (opp) Crossway
- St Matthew`s Church (before) Llanelwedd
- Groe (at) Builth Wells
- Builth Wells High School (o/s) Builth Wells
- Josephs Pitch (opp) Builth Wells
- Post Office (nr former) Erwood
- Boughrood Village (at) Boughrood
- Griffin Inn (opp) Llyswen
- Pontybat Crossroads (after) Llanfilo
- Griffin Inn (opp) Felinfach
- Felinfach Turn (after) Felinfach
- Bishop's Meadow (opp) Brecon
- Brecon College (opp) Brecon
- Breconshire War Memorial Hospital (o/s) Brecon
- Brecon Interchange 1 (at) Brecon
- Free Street (o/s 3) Brecon
- St David's Church (after) Llanfaes
- Libanus (at) Libanus
- Llwyn y Celyn (o/s) Libanus
- Storey Arms (o/s) Glyn Tarell
- Nant Ddu Lodge (opp) Nant-ddu
- Forest Mountain Centre (nr) Llwyn-On
- Llwyn-on Village (before) Llwyn-On
- Cyfarthfa Retail Park (in) Georgetown
- Kirkhouse Memorial Hall (after) Georgetown
- Christ Church (o/s) Georgetown
- RAFA Club (opp) Georgetown
- Merthyr Bus Station 13 Merthyr Tydfil
- Merthyr Bus Station 7 Merthyr Tydfil
T4 towards Llanidloes
- Merthyr Bus Station 2 Merthyr Tydfil
- Merthyr Bus Station 13 Merthyr Tydfil
- RAFA Club (o/s) Georgetown
- Kirkhouse Memorial Hall (o/s) Georgetown
- Merthyr Tydfil College (nr) Merthyr Tydfil
- Christ Church (opp) Georgetown
- Cyfarthfa Retail Park (in) Georgetown
- Llwyn-on Village (after) Llwyn-On
- Forest Visitor Centre (nr) Llwyn-On
- Nant Ddu Lodge (o/s) Nant-ddu
- Storey Arms (opp) Glyn Tarell
- Llwyn y Celyn (opp) Libanus
- Libanus (at) Libanus
- St David`s Church (opp) Llanfaes
- Bulwark (before) Brecon
- Brecon Interchange 2 (at) Brecon
- Breconshire War Memorial Hospital (opp) Brecon
- Brecon College (o/s) Brecon
- Bishop's Meadow (o/s) Brecon
- Felinfach Turn (before) Felinfach
- Griffin Inn (opp) Felinfach
- Pontybat Crossroads (after) Llanfilo
- Boughrood Village (at) Boughrood
- Griffin Inn (o/s) Llyswen
- Griffin Inn (o/s) Boughrood
- Erwood Inn (opp) Erwood
- Josephs Pitch (before) Builth Wells
- Builth Wells High School (o/s) Builth Wells
- Groe (at) Builth Wells
- Buith Road Turn (after) Builth Road
- Newbridge-on-Wye Primary (opp) Newbridge on Wye
- New Inn (opp) Newbridge on Wye
- Post Office (after) Newbridge on Wye
- Argoed Mill (opp) Argoed
- Llanwrthwl Bridge (after) Llanwrthwl
- Post Office (o/s) Doldowlod
- Bryn Gwy (opp) Rhayader
- o/s Lamb and Flag Rhayader
- Pont Marteg (after) Nantserth
- Dolfach-isaf (nr) Dolfach
- Bwlch-y-garreg (nr) Cwmbelan
- Cwmbelan Turn (before) Llanidloes
- Llanidloes High School (o/s) Llanidloes
- St Matthew`s Church (opp) Llanelwedd
- Sunny Haven Park (o/s) Crossway
- Llwyn-dderw (nr) Howey
- Howey Village (before) Howey
- Pentrosfa (opp) Llandrindod Wells
- Ridgebourne (opp) Llandrindod Wells
- Grosvenor Stores (o/s) Llandrindod Wells
- Auto Palace (opp) Llandrindod Wells
- Llandrindod Wells Interchange Stand 2 Llandrindod Wells
- Tremont Road (opp Celf Centre) Llandrindod Wells
- Swiss Villa (o/s) Llandrindod Wells
- Tan-y-Fron (nr) Fron
- Builders Arms (after) Crossgates
- Penybryn (after) Crossgates
- Crossways (o/s) Llanddewi Ystradenny
- St David`s Church (after) Llanddewi Ystradenny
- Ithon View (nr) Llanddewi Ystradenny
- Vicarage (opp) Llanbister Road
- Llananno Bridge (before) Llananno
- Maes-yr-helem Bridge (before) Llanbadarn Fynydd
- New Inn (after) Llanbadarn Fynydd
- Dolaucwmffrwd Turn (after) Llanbadarn Fynydd
- Llaithddu Turn (after) Dolfor
- Camnant (nr) Dolfor
- Dolfor Church (before) Dolfor
- Dolfor Bus Stop (at) Dolfor
- Garrig Layby (W-Bound) Dolfor
- Plantation Lane (after) Garth Owen
- Ladywell House (before) Newtown
- Park Street Newtown
- Newtown Bus Station Stand 2 Newtown
- Hill View Close (before) Trehafren
- Flying Shuttle (nr) Trehafren
- Newtown College (in) Mochdre
- Flying Shuttle (nr) Trehafren
- Hill View Close (after) Trehafren
- Newtown College (opp) Maesyrhandir
- Penstrowed Bridge (after) Newtown
- Post Office (nr) Llandinam
- Dolwen Turn (after) Dolwen
- Millennium Garden (nr) Llanidloes
Service history & registered changes
- 🆕 Registered effective 13 Apr 2026 Operating between NEWTON BUS STATION STAND 2, WESLEY STREET,NEWTON and MERTHYR TUDFIL BUS STAND STAND 13, SWAN STREET,MERTHYR TUDFIL given service number T4 / T4L effective from 13 April 2026. To amend Route, Stopping Places and Timetable.
- 🆕 Registered effective 1 Sept 2025 From: NEWTON BUS STATION STAND 2, WESLEY STREET,NEWTON To: MERTHYR TUDFIL BUS STAND STAND 13, SWAN STREET,MERTHYR TUDFIL Via: Llandrindod Wells, Builth Wells, Brecon Name or No.: T4 / T4L Service type: Normal Stopping Effective date: 01 Sep
From official Traffic Commissioner registrations. All service changes →
Towns & areas on this route
Merthyr TydfilNewtownBreconLlandrindod WellsRhayaderLlanidloesBuilth WellsCrossgatesDolforNewbridge on WyeLlanbadarn FynyddFron
Frequently asked questions
What time is the first T4 bus?
The first T4 departure on weekdays leaves at 06:00 (check the full timetable below for your stop, as times vary along the route — weekend times can differ).
What time is the last T4 bus?
The last T4 on weekdays leaves its first stop at 23:18. Always check the timetable for your specific stop — later stops are reached after this time.
How much does the T4 bus cost?
The England fare cap doesn't apply in Wales — Celtic Travel sets the fares on the T4. Check their website or the Traveline Cymru fare finder for current prices.
Who runs the T4 bus?
The T4 is operated by Celtic Travel.
Timetable data from the operator via the DfT Bus Open Data Service. Check before you travel — services can change at short notice.