| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| 1 | – | ↓↓ | Rhondda Fach | – | |||
| 2 | ↑ | ↓↓ | Ynyshir | 0m 1045yds | UGL 49 | ||
| Ynyshir | |||||||
| 3 | ↑ | ↓ | National | 0m 1193yds | |||
| 4 | ↑ | ↓ | Tylorstown | 1m 379yds | |||
| 5 | ↑ | ↓ | Pendris Lower | 0m 902yds | |||
| 6 | ↑ | ↓ | Pendyris Upper | 0m 941yds | URS 60 DRS 56 |
||
| 7 | ↑ | ↓ | Ferndale | 0m 1639yds | |||
| 8 | ↑ | ↕ | Maerdy Junction | 0m 731yds | |||
| 9 | ↕ | Maerdy | 1m 759yds | ||||