Horizontal curvature for ELR CNB1 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 |
|---|---|---|---|---|
| 160M 1387y - 160M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | former Peak Forest Jn | |
| 160M 1430y - 160M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 160M 1540y - 160M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 160M 1650y - 161M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 161M 0000y - 161M 0110y | 🟡-🟡🟡🟡-🟡 | Moderate (1,185 m) | ||
| 161M 0110y - 161M 0220y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (555 m) | 442 m → 736 m | Peak Forest Tunnel |
| 161M 0220y - 161M 0330y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (524 m) | 454 m → 608 m | |
| 161M 0330y - 161M 0440y | 🟡-🟡🟡🟡-🟡 | Moderate (1,041 m) | ||
| 161M 0440y - 161M 0550y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (657 m) | 573 m → 753 m | |
| 161M 0550y - 161M 0660y | 🟡-🟡🟡🟡-🟡 | Moderate (1,092 m) | ||
| 161M 0660y - 161M 0770y | 🟡-🟡🟡🟡-🟡 | Moderate (1,209 m) | ||
| 161M 0770y - 161M 0880y | 🟡-🟡🟡🟡-🟡 | Moderate (992 m) | ||
| 161M 0880y - 161M 0990y | 🟠-🟠🟠🟠-⚪ | Moderately Tight (658 m) | 543 m → Straight | |
| 161M 0990y - 161M 1100y | ⭕-🟡🟡🟡-⚪ | Moderate (838 m) | 218 m → Straight | |
| 161M 1100y - 161M 1210y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (743 m) | 153 m → Straight | |
| 161M 1210y - 161M 1320y | 🟠-🟠🟠🟠-⚪ | Moderately Tight (686 m) | 484 m → Straight | |
| 161M 1320y - 161M 1430y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (662 m) | 179 m → Straight | |
| 161M 1430y - 161M 1540y | ⭕-🟡🟡🟡-⚪ | Moderate (928 m) | 120 m → Straight | |
| 161M 1540y - 161M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 161M 1650y - 162M 0000y | ⭕-🟡🟡🟡-⚪ | Moderate (781 m) | 167 m → Straight | |
| 162M 0000y - 162M 0110y | 🟠-🟣🟣🟣-⚪ | Moderate (1,823 m) | 362 m → Straight | |
| 162M 0110y - 162M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 162M 0220y - 162M 0330y | 🟠-🟢🟢🟢-⚪ | Very Flat (13,186 m) | 734 m → Straight | |
| 162M 0330y - 162M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 162M 0440y - 162M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 162M 0550y - 162M 0660y | ⚫-⚪⚪⚪-⚪ | Straight | 24,724 m → Straight | Great Rocks Tunnel |
| 162M 0660y - 162M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Great Rocks Tunnel | |
| 162M 0770y - 162M 0880y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (529 m) | ||
| 162M 0880y - 162M 0990y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (548 m) | ||
| 162M 0990y - 162M 1100y | ⭕-🟠🟠🟠-🟡 | Moderately Tight (529 m) | 219 m → 878 m | |
| 162M 1100y - 162M 1210y | ⭕-🟠🟠🟠-⚪ | Tight (493 m) | <100 m → Straight | |
| 162M 1210y - 162M 1320y | 🟠-🟠🟠🟠-🟠 | Tight (486 m) | ||
| 162M 1320y - 162M 1430y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (670 m) | 121 m → Straight | |
| 162M 1430y - 162M 1540y | 🟡-🟡🟡🟡-🟡 | Moderate (806 m) | ||
| 162M 1540y - 162M 1650y | 🟠-🟢🟢🟢-⚫ | Very Flat (5,908 m) | 606 m → 26,988 m | |
| 162M 1650y - 163M 0000y | ⭕-🟡🟡🟡-⚪ | Moderate (788 m) | 190 m → Straight | |
| 163M 0000y - 163M 0110y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (552 m) | 131 m → Straight | |
| 163M 0110y - 163M 0220y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (703 m) | 162 m → Straight | |
| 163M 0220y - 163M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 163M 0330y - 163M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 163M 0440y - 163M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 163M 0550y - 163M 0660y | 🔵-🔵🔵🔵-⚪ | Flat (4,835 m) | 3,315 m → Straight | |
| 163M 0660y - 163M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 163M 0770y - 163M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 163M 0880y - 163M 0990y | 🟠-🟣🟣🟣-⚪ | Moderate (1,330 m) | 497 m → Straight | |
| 163M 0990y - 163M 1100y | 🟠-🟡🟡🟡-⚪ | Moderate (1,012 m) | 356 m → Straight | |
| 163M 1100y - 163M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 163M 1210y - 163M 1320y | 🟠-🟢🟢🟢-⚪ | Very Flat (15,687 m) | 572 m → Straight | |
| 163M 1320y - 163M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 163M 1430y - 163M 1540y | 🟣-🔵🔵🔵-⚪ | Moderately Flat (2,321 m) | 1,924 m → Straight | |
| 163M 1540y - 163M 1650y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (684 m) | 212 m → Straight | |
| 163M 1650y - 164M 0000y | 🟠-🟠🟠🟠-⚪ | Moderately Tight (703 m) | 370 m → Straight | |
| 164M 0000y - 164M 0110y | 🟠-🟡🟡🟡-⚪ | Moderate (1,102 m) | 492 m → Straight | |
| 164M 0110y - 164M 0220y | ⭕-🟠🟠🟠-⚪ | Moderately Tight (693 m) | 182 m → Straight | |
| 164M 0220y - 164M 0330y | ⭕-🟠🟠🟠-⚪ | Tight (458 m) | <100 m → Straight | |
| 164M 0330y - 164M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 164M 0440y - 164M 0550y | 🟠-🟡🟡🟡-⚪ | Moderate (1,074 m) | 480 m → Straight | |
| 164M 0550y - 164M 0660y | 🟠-🟡🟡🟡-⚪ | Moderate (804 m) | 534 m → Straight | |
| 164M 0660y - 164M 0770y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (596 m) | 595 m → 597 m | |
| 164M 0770y - 164M 0880y | 🟣-🟣🟣🟣-🟣 | Moderate (1,321 m) | ||
| 164M 0880y - 164M 0990y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (666 m) | 489 m → 832 m | Doveholes Tunnel |
| 164M 0990y - 164M 1100y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (511 m) | 492 m → 530 m | Doveholes Tunnel |
| 164M 1100y - 164M 1210y | 🟡-🟡🟡🟡-🟡 | Moderate (982 m) | Doveholes Tunnel | |
| 164M 1210y - 164M 1320y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,809 m) | Doveholes Tunnel | |
| 164M 1320y - 164M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 164M 1430y - 164M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 164M 1540y - 164M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 164M 1650y - 165M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0000y - 165M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0110y - 165M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0220y - 165M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0330y - 165M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0440y - 165M 0550y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0550y - 165M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0660y - 165M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0770y - 165M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0880y - 165M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 0990y - 165M 1100y | ⚫-⚫⚫⚫-⚫ | Extremely Flat (39,442 m) | Doveholes Tunnel | |
| 165M 1100y - 165M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 1210y - 165M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 1320y - 165M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 1430y - 165M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 1540y - 165M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 165M 1650y - 166M 0000y | 🟢-🟢🟢🟢-🟢 | Very Flat (7,982 m) | Doveholes Tunnel | |
| 166M 0000y - 166M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 166M 0110y - 166M 0220y | 🟢-🟢🟢🟢-🟢 | Very Flat (5,748 m) | Doveholes Tunnel | |
| 166M 0220y - 166M 0330y | 🟢-🟢🟢🟢-🟢 | Very Flat (8,422 m) | Doveholes Tunnel | |
| 166M 0330y - 166M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | Doveholes Tunnel | |
| 166M 0440y - 166M 0550y | 🟠-🟡🟡🟡-⚪ | Moderate (1,029 m) | 618 m → Straight | |
| 166M 0550y - 166M 0660y | 🟡-🟡🟡🟡-🟣 | Moderate (1,135 m) | 829 m → 1,782 m | |
| 166M 0660y - 166M 0770y | 🟡-🟡🟡🟡-🟡 | Moderate (1,050 m) | ||
| 166M 0770y - 166M 0880y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (634 m) | 585 m → 671 m | |
| 166M 0880y - 166M 0990y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (673 m) | Chapel LNW Tunnel | |
| 166M 0990y - 166M 1100y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (703 m) | 546 m → 966 m | Chapel LNW Tunnel |
| 166M 1100y - 166M 1210y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (714 m) | 550 m → 916 m | |
| 166M 1210y - 166M 1320y | 🟡-🟡🟡🟡-🟡 | Moderate (750 m) | ||
| 166M 1320y - 166M 1430y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (701 m) | 555 m → 917 m | |
| 166M 1430y - 166M 1540y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (592 m) | ||
| 166M 1540y - 166M 1650y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (669 m) | ||
| 166M 1650y - 167M 0000y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (565 m) | ||
| 167M 0000y - 167M 0110y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (527 m) | ||
| 167M 0110y - 167M 0220y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (618 m) | 582 m → 660 m | |
| 167M 0220y - 167M 0330y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (586 m) | ||
| 167M 0330y - 167M 0440y | 🟡-🟡🟡🟡-🟡 | Moderate (838 m) | ||
| 167M 0440y - 167M 0550y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (742 m) | 703 m → 797 m | |
| 167M 0550y - 167M 0660y | 🟣-🟣🟣🟣-🟣 | Moderate (1,509 m) | ||
| 167M 0660y - 167M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 167M 0770y - 167M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 167M 0880y - 167M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 167M 0990y - 167M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 167M 1100y - 167M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 167M 1210y - 167M 1320y | ⭕-🟡🟡🟡-⚪ | Moderate (1,197 m) | 213 m → Straight | Chinley South Jn |
| 167M 1320y - 167M 1430y | ⭕-🟠🟠🟠-⚫ | Moderately Tight (559 m) | 195 m → 47,124 m | |
| 167M 1430y - 167M 1540y | ⭕-🟠🟠🟠-🔵 | Moderately Tight (506 m) | 157 m → 3,928 m | |
| 167M 1540y - 167M 1650y | ⭕-🟠🟠🟠-🟢 | Moderately Tight (621 m) | 161 m → 8,144 m | |
| 167M 1650y - 168M 0000y | ⭕-🟠🟠🟠-🟢 | Moderately Tight (649 m) | 134 m → 6,306 m | |
| 168M 0000y - 168M 0110y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (733 m) | 432 m → 1,137 m | |
| 168M 0110y - 168M 0220y | 🟢-🟢🟢🟢-🟢 | Very Flat (6,682 m) | Chapel Milton Viaduct | |
| 168M 0220y - 168M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | Chapel Milton Viaduct | |
| 168M 0330y - 168M 0440y | 🟢-🟢🟢🟢-🟢 | Very Flat (9,000 m) | Chapel Milton Viaduct | |
| 168M 0440y - 168M 0550y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (663 m) | 634 m → 679 m | |
| 168M 0550y - 168M 0660y | 🟣-🟣🟣🟣-🟣 | Moderate (1,590 m) | 1,431 m → 1,805 m | |
| 168M 0660y - 168M 0770y | 🔴-🟠🟠🟠-🟣 | Moderately Tight (570 m) | 313 m → 1,814 m | |
| 168M 0770y - 168M 0880y | ⭕-🔴🔴🔴-🟡 | Very Tight (278 m) | 170 m → 1,145 m | Chinley North Jn |
| 168M 0880y - 168M 0990y | 🟡-🟡🟡🟡-🟡 | Moderate (923 m) | ||
| 168M 0990y - 168M 1100y | 🟠-🟠🟠🟠-🟡 | Moderately Tight (678 m) | 524 m → 841 m | |
| 168M 1100y - 168M 1159y | ⚪-⚪⚪⚪-⚪ | Straight |