Horizontal curvature for ELR SMJ1 is based on the digitised notional centre-line, calculated in 100 metre sections. The average radius computation is weighted, however this should be treated as indicative only. The computed minimum and maximum radii are shown for completeness, and often report a much tighter radius than the physical railway. Radii calculations are influenced by the digitisation quality, and often produce inaccurate values at the extremities of the ELR, areas of tracks divergence, and locations of very tight curvature.
| Mileage | Schematic | Average Radius | Radius Range | Features |
|---|---|---|---|---|
| 166M 1193y - 166M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 166M 1210y - 166M 1320y | 🔵-🟢🟢🟢-⚪ | Very Flat (17,422 m) | 4,184 m → Straight | Swinton Jn South |
| 166M 1320y - 166M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 166M 1430y - 166M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 166M 1540y - 166M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | SWINTON | |
| 166M 1650y - 167M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | SWINTON | |
| 167M 0000y - 167M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | Swinton Jn North | |
| 167M 0110y - 167M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 167M 0220y - 167M 0330y | 🟡-🟡🟡🟡-🟡 | Moderate (879 m) | ||
| 167M 0330y - 167M 0440y | 🟡-🟡🟡🟡-🟡 | Moderate (1,168 m) | ||
| 167M 0440y - 167M 0550y | 🟡-🟡🟡🟡-🟡 | Moderate (852 m) | ||
| 167M 0550y - 167M 0660y | 🟣-🟣🟣🟣-🟣 | Moderate (1,340 m) | ||
| 167M 0660y - 167M 0770y | 🟣-🟣🟣🟣-🟣 | Moderate (1,484 m) | ||
| 167M 0770y - 167M 0880y | 🟡-🟡🟡🟡-🟡 | Moderate (1,102 m) | ||
| 167M 0880y - 167M 0990y | 🟡-🟡🟡🟡-🟡 | Moderate (772 m) | ||
| 167M 0990y - 167M 1100y | 🟠-🟡🟡🟡-🟢 | Moderate (949 m) | 361 m → 6,181 m | |
| 167M 1100y - 167M 1210y | 🟡-🟡🟡🟡-🟡 | Moderate (868 m) | ||
| 167M 1210y - 167M 1320y | 🟣-🟣🟣🟣-🟣 | Moderate (1,569 m) | ||
| 167M 1320y - 167M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 167M 1430y - 167M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | former Wath Road Jn | |
| 167M 1540y - 167M 1650y | 🟠-🟡🟡🟡-🟡 | Moderate (866 m) | 690 m → 1,147 m | |
| 167M 1650y - 168M 0000y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (584 m) | 558 m → 613 m | |
| 168M 0000y - 168M 0110y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (656 m) | 609 m → 732 m | |
| 168M 0110y - 168M 0220y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (669 m) | 619 m → 726 m | |
| 168M 0220y - 168M 0330y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (521 m) | 486 m → 553 m | |
| 168M 0330y - 168M 0440y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (615 m) | 567 m → 650 m | |
| 168M 0440y - 168M 0550y | 🟣-🟣🟣🟣-🟣 | Moderate (1,418 m) | ||
| 168M 0550y - 168M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 168M 0660y - 168M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 168M 0770y - 168M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 168M 0880y - 168M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 168M 0990y - 168M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 168M 1100y - 168M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 168M 1210y - 168M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 168M 1320y - 168M 1409y | 🟢-⚪⚪⚪-⚪ | Straight | 5,493 m → Straight | former Dearne Jn |