| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| 1 | - | ↓ | Wootton Bassett East | - | Wootton Bassett | 2 | ↑↑ | ↓ | Wootton Bassett West | 0m 425yds | 3 | ↑ | ↓ | Little Somerford | 6m 781yds | DPL 92 UPL 37 UGL 92 |
4 | ↑ | ↓ | Hullavington | 4m 867yds | DGL 100 UGL 86 |
5 | ↑ | ↓ | Badminton | 5m 1331yds | DPL 75 UPL 38 UGL 61 |
6 | ↑ | ↓ | Chipping Sodbury | 4m 992yds | DPL 43 UPL 51 UGL 85 |
7 | ↑ | ↓ | Wapley Common | 1m 832yds | 8 | ↑ | ↓ | Westerleigh East Junction | 0m 645yds | 9 | ↑ | ↓ | Westerleigh West Junction | 0m 1258yds | 10 | ↑ | ↓ | Coalpit Heath | 1m 651yds | DPL 48 UPL 45 |
11 | ↑ | ↓ | Winterbourne | 1m 825yds | 12 | ↑ | ↓↓↓ | Stoke Gifford East | 1m 1091yds | 13 | ↑↑ | ↓ | Stoke Gifford West | 0m 702yds | 14 | ↑ | ↓ | Patchway | 1m 48yds | DGL 67 URS 57 |
15 | ↑ | ↓ | Patchway Tunnel | 0m 964yds | 16 | ↑ | ↓ | Cattybrook | 1m 1274yds | 17 |
 |
↑ | ↓↓ | Pilning Junction | 1m 18yds | DRS 64 | 18 | ↑↑ | ↓↓ | Pilning | 0m 592yds | URS 35 | 19 | ↑↑ | ↓ | Severn Tunnel East | 1m 394yds | 20 | ↑ | - | Severn Tunnel West | 4m 1595yds |