Horizontal curvature for ELR GSM1 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 |
|---|---|---|---|---|
| 73M 1484y - 73M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Kettering North Jn | |
| 73M 1540y - 73M 1650y | 🔴-🔴🔴🔴-🟠 | Very Tight (319 m) | 268 m → 523 m | |
| 73M 1650y - 74M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 74M 0000y - 74M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 74M 0110y - 74M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 74M 0220y - 74M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 74M 0330y - 74M 0440y | 🟢-🟢🟢🟢-⚫ | Very Flat (17,378 m) | 10,180 m → 39,348 m | |
| 74M 0440y - 74M 0550y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (23,053 m) | ||
| 74M 0550y - 74M 0660y | 🟢-🟢🟢🟢-🟢 | Very Flat (11,131 m) | ||
| 74M 0660y - 74M 0770y | 🟢-🟢🟢🟢-⚪ | Very Flat (17,594 m) | 8,143 m → Straight | |
| 74M 0770y - 74M 0880y | 🟢-🟢🟢🟢-🟢 | Very Flat (15,917 m) | ||
| 74M 0880y - 74M 0990y | 🟡-🟣🟣🟣-🟢 | Moderate (1,728 m) | 880 m → 5,032 m | |
| 74M 0990y - 74M 1100y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (592 m) | 450 m → 775 m | |
| 74M 1100y - 74M 1210y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (510 m) | 381 m → 687 m | |
| 74M 1210y - 74M 1320y | 🔴-🟠🟠🟠-🟠 | Tight (496 m) | 325 m → 699 m | |
| 74M 1320y - 74M 1430y | 🔴-🟠🟠🟠-🔵 | Tight (479 m) | 264 m → 2,261 m | |
| 74M 1430y - 74M 1540y | 🔴-🟠🟠🟠-🟣 | Moderately Tight (573 m) | 330 m → 1,305 m | |
| 74M 1540y - 74M 1650y | 🟢-🟢🟢🟢-⚪ | Very Flat (11,950 m) | 6,665 m → Straight | |
| 74M 1650y - 75M 0000y | 🟢-⚫⚫⚫-⚫ | Extremely Flat (21,605 m) | 19,557 m → 25,863 m | |
| 75M 0000y - 75M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 75M 0110y - 75M 0220y | 🟢-⚫⚫⚫-⚪ | Extremely Flat (23,917 m) | 12,613 m → Straight | |
| 75M 0220y - 75M 0330y | 🟢-⚫⚫⚫-⚪ | Extremely Flat (23,242 m) | 7,331 m → Straight | |
| 75M 0330y - 75M 0440y | 🟢-⚫⚫⚫-⚫ | Extremely Flat (20,942 m) | 18,213 m → 22,979 m | Glendon Viaduct |
| 75M 0440y - 75M 0550y | 🔵-🔵🔵🔵-🔵 | Flat (4,258 m) | 4,162 m → 4,340 m | Glendon Viaduct |
| 75M 0550y - 75M 0660y | 🟢-🟢🟢🟢-🟢 | Very Flat (18,313 m) | Glendon Viaduct | |
| 75M 0660y - 75M 0770y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (23,475 m) | ||
| 75M 0770y - 75M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 75M 0880y - 75M 0990y | 🟢-🟢🟢🟢-🟢 | Very Flat (13,191 m) | 11,680 m → 14,311 m | |
| 75M 0990y - 75M 1100y | 🟢-🟢🟢🟢-🟢 | Very Flat (9,234 m) | 5,611 m → 15,072 m | |
| 75M 1100y - 75M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 75M 1210y - 75M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 75M 1320y - 75M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 75M 1430y - 75M 1540y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (39,271 m) | ||
| 75M 1540y - 75M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 75M 1650y - 76M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 76M 0000y - 76M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 76M 0110y - 76M 0220y | ⚫-⚫⚫⚫-⚪ | Extremely Flat (49,540 m) | 44,355 m → Straight | |
| 76M 0220y - 76M 0330y | 🟡-🟣🟣🟣-🟢 | Moderate (1,851 m) | 1,160 m → 8,857 m | |
| 76M 0330y - 76M 0440y | 🟠-🟣🟣🟣-⚫ | Moderate (1,648 m) | 509 m → 31,057 m | |
| 76M 0440y - 76M 0550y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,277 m) | 1,868 m → 2,845 m | |
| 76M 0550y - 76M 0660y | 🟣-🟣🟣🟣-🔵 | Moderate (1,958 m) | 1,632 m → 2,485 m | |
| 76M 0660y - 76M 0770y | 🟣-🟣🟣🟣-🟣 | Moderate (1,851 m) | 1,824 m → 1,876 m | |
| 76M 0770y - 76M 0880y | 🟣-🟣🟣🟣-🔵 | Moderate (1,880 m) | 1,285 m → 3,383 m | |
| 76M 0880y - 76M 0990y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,731 m) | 2,347 m → 4,551 m | |
| 76M 0990y - 76M 1100y | 🟡-🟣🟣🟣-🔵 | Moderate (1,746 m) | 920 m → 2,836 m | |
| 76M 1100y - 76M 1210y | 🔵-🔵🔵🔵-🔵 | Flat (3,450 m) | 3,396 m → 3,542 m | |
| 76M 1210y - 76M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 76M 1320y - 76M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 76M 1430y - 76M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 76M 1540y - 76M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 76M 1650y - 77M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 77M 0000y - 77M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 77M 0110y - 77M 0220y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (35,808 m) | 32,656 m → 41,550 m | |
| 77M 0220y - 77M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 77M 0330y - 77M 0440y | 🟢-🟢🟢🟢-🟢 | Very Flat (6,602 m) | ||
| 77M 0440y - 77M 0550y | 🟣-🔵🔵🔵-🟢 | Moderately Flat (2,422 m) | 1,538 m → 17,348 m | |
| 77M 0550y - 77M 0660y | 🟣-🔵🔵🔵-🟢 | Moderately Flat (2,646 m) | 1,629 m → 5,216 m | |
| 77M 0660y - 77M 0770y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,340 m) | 1,752 m → 3,068 m | |
| 77M 0770y - 77M 0880y | 🔵-🔵🔵🔵-🔵 | Flat (3,237 m) | Harpers Brook Viaduct | |
| 77M 0880y - 77M 0990y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,114 m) | 1,701 m → 2,813 m | Harpers Brook Viaduct |
| 77M 0990y - 77M 1100y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,308 m) | 1,933 m → 3,171 m | Harpers Brook Viaduct |
| 77M 1100y - 77M 1210y | 🟣-🟣🟣🟣-🔵 | Moderate (1,963 m) | 1,485 m → 4,730 m | |
| 77M 1210y - 77M 1320y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,277 m) | 2,152 m → 2,504 m | |
| 77M 1320y - 77M 1430y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,294 m) | 2,268 m → 2,329 m | |
| 77M 1430y - 77M 1540y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,482 m) | 1,823 m → 3,475 m | |
| 77M 1540y - 77M 1650y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,712 m) | ||
| 77M 1650y - 78M 0000y | 🟣-🟣🟣🟣-🔵 | Moderate (1,936 m) | 1,596 m → 2,756 m | |
| 78M 0000y - 78M 0110y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,700 m) | 1,978 m → 4,610 m | |
| 78M 0110y - 78M 0220y | 🔵-🔵🔵🔵-🟢 | Flat (3,150 m) | 2,196 m → 9,528 m | |
| 78M 0220y - 78M 0330y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,190 m) | 2,102 m → 2,286 m | |
| 78M 0330y - 78M 0440y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,727 m) | 2,231 m → 3,431 m | |
| 78M 0440y - 78M 0550y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,292 m) | 1,864 m → 3,488 m | |
| 78M 0550y - 78M 0660y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,278 m) | 2,098 m → 2,610 m | |
| 78M 0660y - 78M 0770y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,694 m) | 2,204 m → 3,805 m | |
| 78M 0770y - 78M 0880y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,580 m) | 1,698 m → 4,520 m | |
| 78M 0880y - 78M 0990y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,303 m) | 1,884 m → 2,918 m | |
| 78M 0990y - 78M 1100y | 🟢-🟢🟢🟢-🟢 | Very Flat (18,006 m) | ||
| 78M 1100y - 78M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 78M 1210y - 78M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 78M 1320y - 78M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 78M 1430y - 78M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 78M 1540y - 78M 1650y | 🟢-🟢🟢🟢-🟢 | Very Flat (16,305 m) | ||
| 78M 1650y - 79M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 79M 0000y - 79M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 79M 0110y - 79M 0220y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (20,520 m) | ||
| 79M 0220y - 79M 0330y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (29,794 m) | ||
| 79M 0330y - 79M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 79M 0440y - 79M 0550y | 🟢-🟢🟢🟢-⚫ | Very Flat (14,343 m) | 11,179 m → 20,948 m | |
| 79M 0550y - 79M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 79M 0660y - 79M 0770y | 🟢-🟢🟢🟢-⚫ | Very Flat (12,544 m) | 6,508 m → 32,143 m | Corby North Jn |
| 79M 0770y - 79M 0880y | 🔵-🔵🔵🔵-🟢 | Flat (3,105 m) | 2,012 m → 5,929 m | CORBY |
| 79M 0880y - 79M 0990y | 🟡-🟣🟣🟣-🟣 | Moderate (1,268 m) | 860 m → 1,730 m | CORBY |
| 79M 0990y - 79M 1100y | 🟠-🟣🟣🟣-🟢 | Moderate (1,419 m) | 513 m → 10,009 m | CORBY |
| 79M 1100y - 79M 1210y | 🟠-🟣🟣🟣-🟣 | Moderate (1,398 m) | 698 m → 1,946 m | |
| 79M 1210y - 79M 1320y | 🟡-🟣🟣🟣-🟢 | Moderate (1,805 m) | 1,021 m → 5,964 m | |
| 79M 1320y - 79M 1430y | 🟢-🟢🟢🟢-🟢 | Very Flat (14,690 m) | ||
| 79M 1430y - 79M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 79M 1540y - 79M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 79M 1650y - 80M 0000y | 🟢-🟢🟢🟢-🟢 | Very Flat (16,342 m) | ||
| 80M 0000y - 80M 0110y | 🟡-🟡🟡🟡-🟣 | Moderate (1,217 m) | 1,166 m → 1,342 m | |
| 80M 0110y - 80M 0220y | 🟡-🟡🟡🟡-🟡 | Moderate (983 m) | ||
| 80M 0220y - 80M 0330y | 🟣-🟣🟣🟣-🟣 | Moderate (1,674 m) | ||
| 80M 0330y - 80M 0440y | 🟠-🟣🟣🟣-⚪ | Moderate (1,337 m) | 663 m → Straight | |
| 80M 0440y - 80M 0550y | 🟠-🟣🟣🟣-⚪ | Moderate (1,610 m) | 747 m → Straight | |
| 80M 0550y - 80M 0660y | 🟡-🟡🟡🟡-🟡 | Moderate (886 m) | ||
| 80M 0660y - 80M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 80M 0770y - 80M 0880y | 🟡-🟡🟡🟡-🟡 | Moderate (774 m) | ||
| 80M 0880y - 80M 0990y | 🟡-🟡🟡🟡-🟡 | Moderate (828 m) | ||
| 80M 0990y - 80M 1100y | 🟠-🟡🟡🟡-🟡 | Moderate (905 m) | 717 m → 1,094 m | |
| 80M 1100y - 80M 1210y | 🟡-🟡🟡🟡-🟡 | Moderate (1,108 m) | ||
| 80M 1210y - 80M 1320y | 🟡-🟡🟡🟡-🟡 | Moderate (1,003 m) | 888 m → 1,113 m | |
| 80M 1320y - 80M 1430y | 🟣-🟣🟣🟣-🟣 | Moderate (1,290 m) | ||
| 80M 1430y - 80M 1540y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (748 m) | ||
| 80M 1540y - 80M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 80M 1650y - 81M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0000y - 81M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0110y - 81M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0220y - 81M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0330y - 81M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0440y - 81M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0550y - 81M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0660y - 81M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0770y - 81M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0880y - 81M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 0990y - 81M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 1100y - 81M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 1210y - 81M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Corby Tunnel | |
| 81M 1320y - 81M 1430y | 🔵-🔵🔵🔵-🔵 | Flat (4,730 m) | Corby Tunnel | |
| 81M 1430y - 81M 1540y | 🟢-🟢🟢🟢-🟢 | Very Flat (15,098 m) | Corby Tunnel | |
| 81M 1540y - 81M 1650y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (527 m) | 412 m → 625 m | Corby Tunnel |
| 81M 1650y - 82M 0000y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (696 m) | 658 m → 741 m | Corby Tunnel |
| 82M 0000y - 82M 0110y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (728 m) | 677 m → 794 m | Corby Tunnel |
| 82M 0110y - 82M 0220y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (606 m) | ||
| 82M 0220y - 82M 0330y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (502 m) | 477 m → 532 m | |
| 82M 0330y - 82M 0440y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (692 m) | ||
| 82M 0440y - 82M 0550y | 🟠-🟠🟠🟠-🟠 | Tight (485 m) | 387 m → 700 m | |
| 82M 0550y - 82M 0660y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,017 m) | ||
| 82M 0660y - 82M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 82M 0770y - 82M 0880y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (565 m) | 431 m → 864 m | |
| 82M 0880y - 82M 0990y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (638 m) | ||
| 82M 0990y - 82M 1100y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (628 m) | 514 m → 761 m | |
| 82M 1100y - 82M 1210y | 🔴-🟠🟠🟠-🟠 | Tight (497 m) | 347 m → 742 m | |
| 82M 1210y - 82M 1320y | 🟡-🟡🟡🟡-🟡 | Moderate (752 m) | ||
| 82M 1320y - 82M 1430y | 🟣-🟣🟣🟣-🟣 | Moderate (1,342 m) | ||
| 82M 1430y - 82M 1540y | 🟠-🟠🟠🟠-🟠 | Tight (481 m) | 456 m → 505 m | |
| 82M 1540y - 82M 1650y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (555 m) | ||
| 82M 1650y - 83M 0000y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (510 m) | ||
| 83M 0000y - 83M 0110y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (531 m) | 469 m → 594 m | Gretton Viaduct |
| 83M 0110y - 83M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Gretton Viaduct | |
| 83M 0220y - 83M 0330y | 🟡-🟡🟡🟡-🟡 | Moderate (1,092 m) | ||
| 83M 0330y - 83M 0440y | 🟡-🟡🟡🟡-🟡 | Moderate (1,045 m) | ||
| 83M 0440y - 83M 0550y | 🟡-🟡🟡🟡-🟡 | Moderate (948 m) | ||
| 83M 0550y - 83M 0660y | 🟡-🟡🟡🟡-🟡 | Moderate (876 m) | ||
| 83M 0660y - 83M 0770y | 🟣-🟣🟣🟣-🟣 | Moderate (1,331 m) | ||
| 83M 0770y - 83M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 83M 0880y - 83M 0990y | 🔴-🟠🟠🟠-🟠 | Tight (445 m) | 241 m → 688 m | |
| 83M 0990y - 83M 1100y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (587 m) | ||
| 83M 1100y - 83M 1210y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (585 m) | ||
| 83M 1210y - 83M 1320y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (713 m) | 358 m → 1,216 m | |
| 83M 1320y - 83M 1430y | 🟣-🟣🟣🟣-🟣 | Moderate (1,280 m) | ||
| 83M 1430y - 83M 1540y | 🟣-🟣🟣🟣-🟣 | Moderate (1,696 m) | ||
| 83M 1540y - 83M 1650y | 🟡-🟡🟡🟡-🟡 | Moderate (1,022 m) | ||
| 83M 1650y - 84M 0000y | 🟠-🟠🟠🟠-🟠 | Tight (493 m) | ||
| 84M 0000y - 84M 0110y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (649 m) | ||
| 84M 0110y - 84M 0220y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (530 m) | ||
| 84M 0220y - 84M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 84M 0330y - 84M 0440y | 🟣-🟣🟣🟣-🟣 | Moderate (1,300 m) | ||
| 84M 0440y - 84M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 84M 0550y - 84M 0660y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (536 m) | 460 m → 632 m | |
| 84M 0660y - 84M 0770y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (674 m) | ||
| 84M 0770y - 84M 0880y | 🟡-🟡🟡🟡-🟡 | Moderate (946 m) | ||
| 84M 0880y - 84M 0990y | 🟡-🟡🟡🟡-🟡 | Moderate (836 m) | ||
| 84M 0990y - 84M 1100y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (692 m) | 619 m → 777 m | |
| 84M 1100y - 84M 1210y | 🟡-🟡🟡🟡-🟡 | Moderate (815 m) | ||
| 84M 1210y - 84M 1320y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (630 m) | ||
| 84M 1320y - 84M 1430y | 🔴-🟠🟠🟠-🟡 | Moderately Tight (525 m) | 348 m → 922 m | |
| 84M 1430y - 84M 1540y | 🟡-🟡🟡🟡-🟡 | Moderate (764 m) | ||
| 84M 1540y - 84M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 84M 1650y - 85M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 85M 0000y - 85M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 85M 0110y - 85M 0220y | 🔵-🔵🔵🔵-🔵 | Flat (3,403 m) | ||
| 85M 0220y - 85M 0330y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (674 m) | 624 m → 728 m | |
| 85M 0330y - 85M 0440y | 🔵-🔵🔵🔵-🔵 | Flat (4,188 m) | Harringworth Viaduct | |
| 85M 0440y - 85M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 85M 0550y - 85M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 85M 0660y - 85M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 85M 0770y - 85M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 85M 0880y - 85M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 85M 0990y - 85M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 85M 1100y - 85M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 85M 1210y - 85M 1320y | 🟢-🟢🟢🟢-🟢 | Very Flat (9,705 m) | Harringworth Viaduct | |
| 85M 1320y - 85M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 85M 1430y - 85M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 85M 1540y - 85M 1650y | 🔵-🔵🔵🔵-🔵 | Flat (3,218 m) | Harringworth Viaduct | |
| 85M 1650y - 86M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | Harringworth Viaduct | |
| 86M 0000y - 86M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 86M 0110y - 86M 0220y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (641 m) | ||
| 86M 0220y - 86M 0330y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (549 m) | ||
| 86M 0330y - 86M 0440y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (590 m) | ||
| 86M 0440y - 86M 0550y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (713 m) | Seaton Tunnel | |
| 86M 0550y - 86M 0660y | 🟡-🟡🟡🟡-🟣 | Moderate (1,231 m) | 885 m → 1,727 m | Seaton Tunnel |
| 86M 0660y - 86M 0770y | 🟡-🟡🟡🟡-🟡 | Moderate (979 m) | Seaton Tunnel | |
| 86M 0770y - 86M 0880y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (624 m) | ||
| 86M 0880y - 86M 0990y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (578 m) | 485 m → 692 m | |
| 86M 0990y - 86M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 86M 1100y - 86M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 86M 1210y - 86M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 86M 1320y - 86M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Seaton Viaduct | |
| 86M 1430y - 86M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Seaton Viaduct | |
| 86M 1540y - 86M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 86M 1650y - 87M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 87M 0000y - 87M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 87M 0110y - 87M 0220y | 🔵-🔵🔵🔵-🔵 | Flat (3,072 m) | ||
| 87M 0220y - 87M 0330y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,912 m) | ||
| 87M 0330y - 87M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 87M 0440y - 87M 0550y | 🟣-🟣🟣🟣-🟣 | Moderate (1,938 m) | ||
| 87M 0550y - 87M 0660y | 🟢-🟢🟢🟢-🟢 | Very Flat (5,280 m) | Glaston Tunnel | |
| 87M 0660y - 87M 0770y | 🟢-🟢🟢🟢-🟢 | Very Flat (10,085 m) | 9,102 m → 11,644 m | Glaston Tunnel |
| 87M 0770y - 87M 0880y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (46,531 m) | Glaston Tunnel | |
| 87M 0880y - 87M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 87M 0990y - 87M 1100y | 🟢-🟢🟢🟢-🟢 | Very Flat (17,436 m) | Glaston Tunnel | |
| 87M 1100y - 87M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 87M 1210y - 87M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 87M 1320y - 87M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 87M 1430y - 87M 1540y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (33,958 m) | Glaston Tunnel | |
| 87M 1540y - 87M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 87M 1650y - 88M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 88M 0000y - 88M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 88M 0110y - 88M 0220y | 🟢-🟢🟢🟢-🟢 | Very Flat (6,751 m) | Glaston Tunnel | |
| 88M 0220y - 88M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 88M 0330y - 88M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 88M 0440y - 88M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 88M 0550y - 88M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 88M 0660y - 88M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Glaston Tunnel | |
| 88M 0770y - 88M 0880y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (644 m) | ||
| 88M 0880y - 88M 0990y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (564 m) | ||
| 88M 0990y - 88M 1100y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (686 m) | 669 m → 706 m | |
| 88M 1100y - 88M 1210y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,098 m) | ||
| 88M 1210y - 88M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 88M 1320y - 88M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 88M 1430y - 88M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 88M 1540y - 88M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 88M 1650y - 89M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 89M 0000y - 89M 0110y | 🟡-🟡🟡🟡-🟡 | Moderate (982 m) | ||
| 89M 0110y - 89M 0220y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (714 m) | ||
| 89M 0220y - 89M 0330y | 🟠-🟡🟡🟡-🟡 | Moderate (768 m) | 635 m → 890 m | |
| 89M 0330y - 89M 0440y | 🟡-🟡🟡🟡-🟡 | Moderate (810 m) | ||
| 89M 0440y - 89M 0550y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (651 m) | Wing Tunnel | |
| 89M 0550y - 89M 0660y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (715 m) | Wing Tunnel | |
| 89M 0660y - 89M 0770y | 🟡-🟡🟡🟡-🟡 | Moderate (989 m) | Wing Tunnel | |
| 89M 0770y - 89M 0880y | 🟣-🟣🟣🟣-🟣 | Moderate (1,357 m) | 1,316 m → 1,411 m | Wing Tunnel |
| 89M 0880y - 89M 0990y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,548 m) | ||
| 89M 0990y - 89M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 89M 1100y - 89M 1210y | 🟣-🟣🟣🟣-🟣 | Moderate (1,390 m) | ||
| 89M 1210y - 89M 1320y | 🟡-🟣🟣🟣-🟣 | Moderate (1,317 m) | 1,111 m → 1,524 m | |
| 89M 1320y - 89M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Wing Viaduct | |
| 89M 1430y - 89M 1540y | 🟡-🟡🟡🟡-🟡 | Moderate (887 m) | Wing Viaduct | |
| 89M 1540y - 89M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 89M 1650y - 90M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 90M 0000y - 90M 0110y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (740 m) | 662 m → 842 m | |
| 90M 0110y - 90M 0220y | 🟡-🟡🟡🟡-🟡 | Moderate (775 m) | 769 m → 782 m | |
| 90M 0220y - 90M 0330y | 🟡-🟡🟡🟡-⚪ | Moderate (1,233 m) | 788 m → Straight | |
| 90M 0330y - 90M 0440y | 🔴-🟠🟠🟠-⚪ | Moderately Tight (656 m) | 271 m → Straight | |
| 90M 0440y - 90M 0550y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,856 m) | ||
| 90M 0550y - 90M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Manton Jn | |
| 90M 0660y - 90M 0734y | ⚪-⚪⚪⚪-⚪ | Straight |