| Section of Line | Opened | Closed | Notes |
|---|---|---|---|
| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | |
|---|---|---|---|---|---|---|
| 1 | ↕↓ | Bala Junction | - | CL 31 | ||
| 2 | ↕ | Bala Station | 0m 1144yds | CL 27 | ||
| 3 | ↕ | Frongoch Station | 2m 1078yds | |||
| 4 | ↕ | Arenig Station | 5m 242yds | CL 45 | ||
| 5 | ↕ | Transfynydd Station | 8m 1188yds | CL 41 | ||
| Maentwrog Road | ||||||
| 6 | ↕ | Festiniog Station | 4m 1716yds | CL 22 | ||
| Tanymanod Sidings | ||||||
| 7 | ↕ | Blaenau Ffestiniog Central Station | 3m 770yds | CL 37 | ||