121 bus: Ystradgynlais – Pantyffynnon (circular)
South Wales Transport bus 121 is a circular service around Ystradgynlais via Glanrhyd, Gurnos, Ystalyfera and Pantyffynnon. Runs on Mondays, Wednesdays and Fridays only. On Wednesday 4 November the first bus from Pantyffynnon leaves at 08:37 and the last at 16:50, about every hour during the day.
Operated by South Wales Transport. Timetable for Wednesday, 4 November 2026. Plan a journey · Print this timetable
Questions
- When is the first and last 121 bus around Ystradgynlais?
- On Wednesday 4 November the first bus leaves Ystradgynlais at 08:37 and the last at 16:50, 9 journeys in all.
- Does the 121 bus run on Sundays?
- No. Runs on Mondays, Wednesdays and Fridays only.
- How often does the 121 bus run?
- On Wednesday 4 November it runs about every hour during the day (09:00 to 15:00), 9 journeys from Pantyffynnon.
- Where does the 121 bus stop?
- Main stops: Ystradgynlais Bus Station Stand 2 (Ystradgynlais), Glanrhyd Hospital (Glanrhyd), Gurnos Primary School (Gurnos), Tesco Ystradgynlais (Ystradgynlais), New Swan Inn (Ystalyfera), Farteg (Ystalyfera), Ystalyfera Asda (Ystalyfera), Hodgson's Road (Pantyffynnon), Graig Newydd Estate (Pantyffynnon), Pantyffynon Terrace (Pantyffynnon), Allt-y-Grug (Ystalyfera). The full list is in the timetable below.
- Who runs the 121 bus?
- South Wales Transport.
Towards Ystradgynlais
| Stop | Journey 1 | Journey 2 | Journey 3 | Journey 4 | Journey 5 | Journey 6 | Journey 7 | Journey 8 | Journey 9 |
|---|---|---|---|---|---|---|---|---|---|
| Ystradgynlais Bus Station Stand 2 | 09:10 | 10:10 | 11:10 | 12:40 | 13:40 | 14:40 | 16:00 | 16:50 | |
| Glanrhyd Hospital | 09:14 | 11:14 | 13:44 | 16:04 | |||||
| Gurnos Primary School | 10:16 | 12:46 | 14:46 | 16:56 | |||||
| Tesco Ystradgynlais | 09:17 | 10:20 | 11:17 | 12:50 | 13:47 | 14:50 | 16:07 | 17:00 | |
| New Swan Inn, Ystalyfera | 09:19 | 10:22 | 11:19 | 12:52 | 13:49 | 14:52 | 16:09 | 17:02 | |
| Farteg, Ystalyfera | 09:21 | 10:24 | 11:21 | 12:54 | 13:51 | 14:54 | 16:11 | 17:04 | |
| Ystalyfera Asda | 09:24 | 10:27 | 11:24 | 12:57 | 13:54 | 14:57 | 16:14 | 17:07 | |
| Hodgson's Road, Pantyffynnon | 09:28 | 10:31 | 11:28 | 13:01 | 13:58 | 15:01 | 16:18 | 17:11 | |
| Graig Newydd Estate, Pantyffynnon | 08:37 | 09:29 | 10:32 | 11:29 | 13:02 | 13:59 | 15:02 | 16:19 | 17:12 |
| Pantyffynon Terrace, Pantyffynnon | 08:39 | 09:31 | 10:34 | 11:31 | 13:04 | 14:01 | 15:04 | 16:21 | 17:14 |
| Allt-y-Grug, Ystalyfera | 08:45 | 09:37 | 10:40 | 11:37 | 13:10 | 14:07 | 15:10 | 16:27 | 17:20 |
| New Swan Inn, Ystalyfera | 08:50 | 09:42 | 10:45 | 11:42 | 13:15 | 14:12 | 15:15 | 16:32 | 17:25 |
| Tesco Ystradgynlais | 08:52 | 09:44 | 10:47 | 11:44 | 13:17 | 14:14 | 15:17 | 16:34 | 17:27 |
| Gurnos Primary School | 09:46 | 11:46 | 14:16 | ||||||
| Glanrhyd Hospital | 08:55 | 10:50 | 13:20 | 15:20 | 16:37 | 17:30 | |||
| Ystradgynlais Bus Station Stand 2 | 08:59 | 09:53 | 10:54 | 11:53 | 13:24 | 14:23 | 15:24 | 16:41 | 17:34 |
Places on this route
Timetables from the Bus Open Data Service (Department for Transport), updated Tuesday, 3 November 2026. Stop details from NaPTAN. Train timetables contain data from Network Rail, licensed under the Open Government Licence; live train times from National Rail. Times are UK local time and can change at short notice: check before you travel.
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