| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| 1 | ↕ | Pontardulais Junction Station | – | ||||
| 2 | ↕ | ↓ | Hendy Junction | 0m 946yds | |||
| 3 | ↑ | ↓↓ | Morlais Junction | 1m 154yds | |||
| 4 | ↑↑ | ↓ | Llangennech Station | 0m 1336yds | |||
| 5 | ↑ | ↓ | Llangennech Siding | 0m 643yds | |||
| 6 | ↑ | ↓ | Bynea Station | 1m 940yds | DRS 47 | ||
| 7 | ↑ | ↓↓ | Genwen Junction | 0m 753yds | |||
| 8 | ↑↑ | – | Llandilo Junction East | 0m 1122yds | |||