| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| 1 | - | ↓↓ | Llantrisant East | - | |||
| 2 | ↑↑ | ↓ | Mwyndy Junction | 0m 880yds | |||
| 3 | ↑ | ↓ | Common Junction | 1m 1474yds | |||
| 4 | ↑ | ↓ | Gellyrhaidd Junction | 1m 1694yds | UGL 50 | ||
| 5 | ↑ | ↕ | Penygraig | 2m 1716yds | |||
| 6 | ↕ | Clydach Vale | 1m 1408yds | ||||