Viewing the timetable for service T4
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Oedi T4/Delays T4
Today 14:41 - 16th Oct 2026
Oherwydd cau llawn cylchfan Tarell heno (15/10/26), fydd y gwasanaethau T4 canlynol yn rhedeg cerbyd llai ar lwybr amgen trwy'r A40 Sennybridge / Defynnog a dychwelyd i'r A470. Efallai y bydd rhywfaint o oedi oherwydd hyn ond gallwn eich sicrhau y bydd ein tîm yn gweithio'n galed i gadw'r gwasanaeth ar amser. 18:14 ymlaen
Due to the full closure of the Tarell roundabout tonight (15/10/26), the following T4 services will operate a smaller vehicle on a diversion route via the A40 Sennybridge / Defynnog and back onto A470. There may be some delays as a result but we can assure you our team will work hard to keep the service to schedule. 18:14 onwards -
Amhariad ar y T4 / Disruption on the T4
2nd Jul 2026 onwards
Ni fydd yr T4 yn gallu gwasanaethu Free Street, Aberhonddu tan hysbysiad pellach (oherwydd gwaith ffordd sy'n gwneud hi'n amhosibl i gerbydau fawr basio drwyddi). Dylai teithwyr fynd i'r Orsaf Bws yn Aberhanddu.
The T4 will not be able to serve Free Street, Brecon until further notice (due to roadworks making it impossible for larger vehicles to pass through).
Passengers should make their way to the Bus Interchange.
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Route map
| Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | Service T4 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Millennium Garden (nr), Llanidloes | - | 06:00 This stop is for pick up only | 06:05 This stop is for pick up only | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Lamb and Flag, Rhayader | - | 06:24 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Post Office (before), Newbridge on Wye | - | 06:34 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Llandinam Bus Shelter (o/s), Llandinam | - | - | 06:15 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Newtown Bus Station Stand 2, Newtown | - | - | 06:35 | - | 08:35 This stop is for pick up only | - | 10:05 This stop is for pick up only | - | 12:05 This stop is for pick up only | - | 14:05 This stop is for pick up only | - | 16:05 This stop is for pick up only | 18:05 This stop is for pick up only | - | 20:15 This stop is for pick up only |
| Newtown College (in), Mochdre | - | - | - | - | - | - | - | - | - | - | - | - | 16:12 | - | - | - |
| Dolfor Church (before), Dolfor | - | - | 06:49 | - | 08:49 | - | 10:19 | - | 12:19 | - | 14:19 | - | 16:26 | 18:19 | - | 20:29 |
| New Inn (before), Llanbadarn Fynydd | - | - | 07:01 | - | 09:01 | - | 10:31 | - | 12:31 | - | 14:31 | - | 16:38 | 18:31 | - | 20:41 |
| Lion Hotel (before), Llanbister | - | - | 07:07 | - | 09:07 | - | 10:37 | - | 12:37 | - | 14:37 | - | 16:44 | 18:37 | - | 20:47 |
| Ithon View (nr), Llanddewi Ystradenny | - | - | 07:12 | - | 09:12 | - | 10:42 | - | 12:42 | - | 14:42 | - | 16:49 | 18:42 | - | 20:52 |
| Penybryn (before), Crossgates | - | - | 07:19 | - | 09:19 | - | 10:49 | - | 12:49 | - | 14:49 | - | 16:56 | 18:49 | - | 20:59 |
| Llandrindod Wells Interchange Stand 3, Llandrindod Wells | - | - | 07:30 | - | 09:30 | - | 11:00 | - | 13:00 | - | 15:00 | - | 17:05 | 19:00 | - | 21:10 |
| Sunny Haven Park (opp), Crossway | - | - | 07:37 | - | 09:37 | - | 11:07 | - | 13:07 | - | 15:07 | - | 17:12 | 19:07 | - | 21:17 |
| St Matthew`s Church (before), Llanelwedd | - | - | 07:44 | - | 09:44 | - | 11:14 | - | 13:14 | - | 15:14 | - | 17:19 | 19:14 | - | 21:24 |
| Groe (at), Builth Wells | - | 06:44 | 07:51 | - | 09:51 | - | 11:21 | - | 13:21 | - | 15:20 | - | 17:26 | 19:21 | - | 21:31 |
| Builth Wells High School (o/s), Builth Wells | - | - | - | - | - | - | - | - | - | - | 15:35 | - | - | - | - | - |
| Groe (at), Builth Wells | - | - | - | - | - | - | - | - | - | - | 15:37 | - | - | - | - | - |
| Post Office (nr former), Erwood | - | 06:57 | 08:03 | - | 10:03 | - | 11:33 | - | 13:33 | - | 15:49 | - | 17:38 | 19:33 | - | 21:43 |
| Boughrood Village (at), Boughrood | - | - | 08:10 | - | 10:10 | - | 11:40 | - | 13:40 | - | - | - | 17:45 | 19:40 | - | 21:50 |
| Griffin Inn (opp), Llyswen | - | 07:04 | 08:14 | - | 10:14 | - | 11:44 | - | 13:44 | - | 15:55 | - | 17:49 | 19:44 | - | 21:54 |
| Griffin Inn (opp), Felinfach | - | - | 08:23 | - | 10:23 | - | 11:53 | - | 13:53 | - | 16:04 | - | 17:58 | 19:53 | - | 22:03 |
| Brecon College (opp), Brecon | - | 07:16 | 08:30 | - | 10:30 | - | 12:00 | - | 14:00 | - | 16:11 | - | 18:05 | 20:00 | - | 22:10 |
| Brecon Interchange 1 (at), Brecon | 06:24 This stop is for pick up only | 07:24 | 08:39 | 09:39 This stop is for pick up only | 10:35 | 11:09 This stop is for pick up only | 12:09 | 13:09 This stop is for pick up only | 14:09 | 15:09 This stop is for pick up only | 16:20 | 17:14 This stop is for pick up only | 18:14 | 20:03 This stop is for set down only | 20:14 This stop is for pick up only | 22:19 |
| Libanus (at), Libanus | 06:35 | 07:35 | 08:50 | 09:50 | 10:46 | 11:20 | 12:20 | 13:20 | 14:20 | 15:20 | 16:31 | 17:25 | 18:25 | - | 20:25 | 22:30 |
| Storey Arms (o/s), Glyn Tarell | 06:41 | 07:41 | 08:56 | 09:56 | 10:52 | 11:26 | 12:26 | 13:26 | 14:26 | 15:26 | 16:37 | 17:31 | 18:31 | - | 20:31 | 22:36 |
| Cyfarthfa Retail Park (in), Georgetown | 06:56 | 07:56 | 09:11 | 10:11 | 11:07 | 11:41 | 12:41 | 13:41 | 14:41 | 15:41 | 16:52 | 17:46 | 18:46 | - | 20:46 | 22:51 |
| Merthyr Bus Station 13 (at), Merthyr Tydfil | - | - | - | - | - | - | - | - | - | - | - | - | 18:49 This stop is for set down only | - | 20:49 This stop is for set down only | 22:54 This stop is for set down only |
| Merthyr Bus Station 7 (at), Merthyr Tydfil | 06:59 This stop is for set down only | 07:59 This stop is for set down only | 09:14 This stop is for set down only | 10:14 This stop is for set down only | 11:10 This stop is for set down only | 11:44 This stop is for set down only | 12:44 This stop is for set down only | 13:44 This stop is for set down only | 14:44 This stop is for set down only | 15:44 This stop is for set down only | 16:55 This stop is for set down only | 17:49 This stop is for set down only | - | - | - | - |