| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| Maximum permissible speed 75 m.p.h. | |||||||
| 1 |
 |
- | ↓ | Roade Junction | - | ||
| Roade Station | |||||||
| 2 | ↑ | ↓ | Middleton | 2m 1465yds | |||
| 3 | ↑ | ↓ | Duston West | 2m 963yds | |||
| 4 |
 |
↑ | ↓↓↓ | Northampton Castle No. 1 | 0m 986yds | ||
| 5 | ↑↑ | ↓↓ | Northampton Castle No. 2 | 0m 561yds | |||
| 6 | ↑↑ | ↓↓↕↓ | Northampton Castle No. 3 | 0m 369yds | |||
| 7 | ↑↑↑ | ↓↓ | Northampton Castle No. 4 | 0m 877yds | |||
| 8 |
 |
↑↑↑ | ↓ | Northampton Castle No. 5 | 0m 1094yds | ||
| 9 | ↑ | ↓ | Althorp Park Station | 4m 1332yds | DRS 42 URS 43 |
||
| 10 | ↑ | ↓ | Long Buckby Station | 3m 1074yds | DRS 38 URS 54 |
||
| 11 | ↑ | ↓ | Watford Lodge | 2m 1498yds | UPL 99 | ||
| 12 | ↑ | ↓ | Kilsby & Crick Station | 2m 1078yds | URS 42 | ||
| 13 | ↑ | ↓ | Hillmorton Sidings | 1m 726yds | |||
| 14 |
 |
↑↑ | - | Rugby Midland No. 1 | 2m 55yds | ||